Have a ph value less than ph 7 Turn blue litmus indicator red Can neutralise an alkali Have a sour taste (WARNING: never taste any chemicals)
|
|
|
- Naomi Bond
- 5 years ago
- Views:
Transcription
1 Acids and Alkalis ACIDS (acidic solutions) Acids have the following properties: Have a ph value less than ph 7 Turn blue litmus indicator red Can neutralise an alkali Have a sour taste (WARNING: never taste any chemicals) examples of common acids: Weak acids citric acid (found in lemons and other citrus fruits) tannic acid (found in tea) acetic acid (found in vinegar) formic acid (found in ant stings) [ Acetic acid is correctly called ethanoic acid and formic acid is correctly called called methanoic acid ] Strong acids sulphuric acid (accumulator acid, found in car batteries) hydrochloric acid (in our stomach to kill germs) nitric acid (used in the manufacture of explosives and fertilizers) NOTE: strong acids are a lot more dangerous than weak acids. Acids are CORROSIVE which means they will attack and weaken many things including metals, paper, clothing and skin. A concentrated acid or alkali is more dangerous than a dilute one. To make something more dilute water needs to be added. CONCENTRATED means without much or without any water added. DILUTE means a lot of water added.
2 ALKALIS ( alkaline solutions) Alkalis have the following properties: Have a ph value more than ph 7 Turn red litmus indicator blue Can neutralise an acid Feel soapy to touch (reacts with fat to form soap) Examples of common alkalis: caustic soda (sodium hydroxide): used to clean ovens and drains washing soda (sodium carbonate) ammonia solution (often used in household cleaners) garden lime (calcium oxide): used to neutralise acid in the soil indigestion powder (often magnesium hydroxide) Alkalis are caustic which means they will burn skin and eyes. A strong alkali (like caustic soda) is VERY dangerous. NEUTRAL LIQUIDS A neutral liquid is one with a ph value equal to ph 7. examples: water, salt (sodium chloride) solution, sugar solution (Just because a liquid is neutral does not mean that it is safe to drink) THE ph SCALE A scale of numbers ranging from 1 to 14 The ph number tells you if a liquid is a liquid is an acid or an alkali. ph 7 is neutral. Less than ph7 is acid. More than ph7 is an alkali
3 Table of ph numbers Indicators An indicator is a liquid that is used to show whether we have an acid or an alkali It is one colour in an acid and another in an alkali There are two indicators you need to know the names of: Litmus indicator and Universal indicator Litmus Indicator Litmus can only be two colours In ACIDS it is RED In ALKALIS it is BLUE We use litmus indicator when we want to tell precisely when a liquid is neutral but it can't tell us how strong an acid or an alkali is Universal indicator Universal indicator is a liquid that changes colour depending on the ph of the liquid it is added to. We use universal indicator when we want to know how strong an acid or alkali is but it is difficult to know when a liquid is precisely neutral
4 A table to show the ph values of some common substances (N) NOTE: These substances are very dangerous because they are very strong acids or alaklis and must be used with great care.
5 NEUTRALIZATION When an alkali is added to an acid a chemical reaction takes place. This reaction is called NEUTRALIZATION and makes the ph number rise. The alkali is 'opposite' to the acid and cancels it out. An acid always reacts with an alkali to produce a salt and water ACID + ALKALI = SALT + WATER eg Hydrochloric acid will react with sodium hydroxide to produce a solution of sodium chloride (salty water) If the solution is warmed so the water evaporates crystals of common salt will be left Word equation Hydrochloric acid + sodium hydroxide Some useful applications of neutralization: ----> sodium chloride + water 1. In agriculture: Lime (or quicklime), which is an alkali, is placed on the soil to neutralise acid soil and so raise its ph. The soil becomes too acid due to the bacteria which help plants and animals decompose. Why do we need to neutralise soil? Some plants grow better in less acid soils Bacteria, which cause plants to decompose and so fertilize the soil, grow better in less acid soils. 2. In medicine: Indigestion is often caused by too much acid in your stomach. Indigestion mixture contains a mild alkali which neutralises excess acid in your stomach.
6 Reactions involving acids 1. Acids react with most metals to release hydrogen gas: eg zinc + sulphuric acid zinc sulphate + hydrogen 2. Acids react with any metal carbonate (eg copper carbonate or calcium carbonate) to produce carbon dioxide gas eg calcium carbonate + hydrochloric acid calcium chloride + water + carbon dioxide 3. An acid reacts with an alkali to form a salt plus water ACID + ALKALI SALT + WATER eg hydrochloric acid + sodium hydroxide sodium chloride + water This is an example of a neutralization reaction NOTE: A base is any chemical that can neutralise an acid. An alkali is a base that is soluble in water. A salt is formed whenever a base neutralises an acid eg. sulphuric acid + copper oxide copper sulphate + water [acid + base salt + water]
Understand what acids and alkalis are, and where they are found.
Lesson Aims- Understand what acids and alkalis are, and where they are found. Test a range of household products with litmus indicator to see whether they are acidic or alkaline. Found in citrus fruit
Introducing Science Summary Sheet
Introducing Science Summary Sheet Acids in the laboratory Dilute acids You will have used some dilute acids at school, such as hydrochloric acid, sulphuric acid and nitric acid. Their bottles are labelled
Classifying Substances
Classifying Substances There are other ways you can use to classify compounds. For example, you can classify some compounds as acids or bases. You are very familiar with acids and bases because you see
Science 10. Unit 2: Chemistry. Book 5: Acid -Base Chemistry & the ph Scale. Block: Name:
Science 10 Unit 2: Chemistry Book 5: Acid -Base Chemistry & the ph Scale Name: Block: 1 Classifying Substances There are other ways you can use to classify compounds. For example, you can classify some
7E Acids and alkalis Multiple-choice main test
For each question, circle the correct answer. Question 1 Vinegar is an acid. Like some other acids vinegar tastes... A) salty B) sour C) sugary D) sweet Question 2 Acids may be hazardous chemicals. Concentrated
reacts with ammonium sulfate to form ammonia It reacts with a carbonate to form carbon dioxide. It reacts with an ammonium salt to form ammonia.
1 Which statements are properties of an acid? 1 reacts with ammonium sulfate to form ammonia 2 turns red litmus blue 1 2 2 Which property is not characteristic of a base? It reacts with a carbonate to
Unit 1: Chemistry in Action
Unit 1: Chemistry in Action Intermediate 1 Chemistry Learning Outcomes Substances Elements Everything in the world is made from about 100 elements. Each element has a name and a symbol. Chemists have arranged
5 ACIDS, BASES AND SALTS
5 ACIDS, BASES AND SALTS TEXTBOOK QUESTIONS AND THEIR ANSWERS Q.1. Taste the following substances and enter the result in the following table : Substance Taste (Sour / bitter / any other) Lemon juice Orange
Choose the correct answer. velocity changes in every two seconds by ms -1
Acceleration Q I Choose the correct answer 1. If a body moves with uniform velocity its acceleration is -----zero. 2. Acceleration of a body is the rate of change of ----velocity 3. The acceleration of
Name: Date: Number: Acids
Acids The sour taste of the lemon juice tells us that it is an acid. Acids are special kinds of chemicals. They are common in everyday life. Some are helpful, others are harmful. There are some that are
The Characteristic Properties of Acids and Bases
The haracteristic Properties of cids and ases Question Paper 1 Level IGSE Subject hemistry (0620/091) Exam oard ambridge International Examinations (IE) Topic cids, bases and salts Sub-Topic The characteristic
Form 4 Chapter 7: Acid and Bases
Form 4 Chapter 7: Acid and Bases The ph Scale Properties Acids Alkalis Physical. Substances that ionized in water to produce hydrogen ions.. Sour taste.. Turn blue litmus paper red. 4. Give a ph value
Topic 5 National Chemistry Summary Notes. Acids and Alkalis
Topic 5 National Chemistry Summary Notes Acids and Alkalis Experiment Collect some samples of rain water LI 1 The ph Scale The ph scale is a continuous range of numbers from below 0 to above 14. Acids
Downloaded from
1 X Chemistry Chapter 2 Acids, Bases and Salts Chapter Notes Top concepts: 1. Definition of acids, bases and salts: Acids Bases Salts Sour in taste Bitter in taste & soapy to touch Acid + Base Salt + Water
How do Metal Carbonates and Metal Hydrogencarbonates React
Acids, Bases, and Salts] This chapter is about: Reaction of acids and bases, how acids and bases cancel out each other s effects and many more interesting things that we use and see in our day-to-day life.
SUBJECT SCIENCE CLASS VII CHAPTER 4, HEAT
SUBJECT SCIENCE CLASS VII CHAPTER 4, HEAT 1. What is temperature? Temperature is the reliable measure of the hotness of an object. 2. What is thermometer? Thermometer is a device which is used to measure
Chemistry at Home Summary Notes
Neutral Yellow Green Cyan Chemistry at Home Summary Notes Section 1 - Indicators Substances can be acid, alkali or neutral. Acid and alkali are the opposite of each other and neutral is in the middle.
An acidic substance always contains (1) in its name. An (2) is a chemical that changes colour to tell you
Test Part A Fill in the gaps An acidic substance always contains (1) in its name. An (2) is a chemical that changes colour to tell you whether a substance is an acid or a (3). Another name for (4)/(5)
Neutralisation. November 29, neutral
Neutralisation November 29, 2015 neutral STARTER Decide if the statements are true or false. 1. Vinegar is an example of an alkali. FALSE 2. Tea contains tannic acid. TRUE 3. Coke is an alkali. FALSE 4.
Acids, Bases & Salts
Introduction Acids, Bases & Salts Elements combine to form numerous compounds. On the basis of their chemical properties, compounds can be classified into three categories: Acids Bases Salts Acids and
Acids, Bases and Salts
Acids, Bases and Salts Synopsis Substances are classified into acids, bases and salts depending on their chemical behavior and properties. Acids are of sour taste and turn blue litmus to red. Bases are
3/26/2011. explosion
Chemistry Acids and Bases Year 10 Study of Chemicals and how they react Everything is made of chemicals They are made of elements. There are over 100 elements Acids are common Some are dangerous and can
SNC2D CHEMISTRY 2/24/2013. CHEMICAL REACTIONS L Acids & Bases (P ) Activity: Introduction to (2DCHEM-ASG3) Introduction to Acids & Bases
SNC2D CHEMISTRY CHEMICAL REACTIONS L Acids & Bases (P.198-201) Activity: Introduction to (2DCHEM-ASG3) INSTRUCTIONS A. Read the activity 2DCHEM - ASG3 (Introduction to Acids & Bases). B. Follow the instructions
HarperCollinsPublishers Licensed for home use only. Not for whiteboard or general classroom use
BIG IDEAS Acids and alkalis You are learning to: Sort common materials into acids and alkalis Explain some properties of acids and alkalis Recognise the common chemical properties of acids and alkalis
ADEng. Programme Chemistry for Engineers Prepared by M. J. McNeil, MPhil.
ADEng. Programme Chemistry for Engineers Prepared by M. J. McNeil, MPhil. Department of Pure and Applied Sciences Portmore Community College Main Campus 1 LECTURE OBJECTIVES Define acid, bases, alkali,
Lab: Cabbages in Chemistry 3pts ec printing in COLOR / 2pts B&W
Lab: Cabbages in Chemistry 3pts ec printing in COLOR / 2pts B&W Telltale Colors 1. In the mixing tray, place 5 drops of the chemical in 13 compartments 2. DIP test the ph paper & record the ph measurement
Science Home Learning Task. Year 8. Acids and alkalis
Science Home Learning Task Year 8 Acids and alkalis Name Tutor Group Teacher Given out: Monday 6 November Hand in: Monday 13 November Parent/Carer Comment Staff Comment Target Investigating science Welcome
UNIT 10 COMMON ACIDS AND ALKALIS
ABLE EDUCATION CENTRE UNIT 10 COMMON ACIDS AND ALKALIS A Multiple-choice questions 1 Which of the following are the properties of alkalis? (1) They taste sour. (2) They are slippery. (3) They can turn
1 What is a chemical reaction?
1 What is a chemical reaction? Substances on Earth are being continually changed due for example to extremes of hot and cold, to wind and weather, to acid rain and to solutions of different chemicals coming
Chapter 8. Table of Contents. Section 1 Acids, Bases, and ph. Section 2 Reactions of Acids with Bases. Section 3 Acids, Bases, and Salts in the Home
Acids, Bases, and Salts Table of Contents Section 2 Reactions of Acids with Bases Section 3 Acids, Bases, and Salts in the Home What Are Acids? An acid is a compound that dissolves in water to increase
Unit 5 Lesson 2 Acids, Bases, and Salts. Copyright Houghton Mifflin Harcourt Publishing Company
Donations Accepted What are acids and bases? Acids and bases are chemicals that increase the number of ions present in a water solution when they dissolve. Lemon juice and vinegar both contain acid. Shampoo
Chapter 19 Acids and Bases
Chapter 19 Acids and Bases p.1/11 19.1 Introducing Acids and Alkalis Acids and bases are common stuff in everyday life. Domestic Acids and Alkalis Common domestic acids Many foods and drinks contain acids.
The grade 5 English science unit, Acids and Bases, meets the academic content standards set in the Korean curriculum, which state students should:
This area addresses ph among different characteristics of solutions. It will be interesting for students to classify a variety of solutions into acids and bases by using the characteristics of the solutions.
K e y S t a g e 3 S c i e n c e
Key Stage 3 Science Series editors Consultant Authors Andy Cooke Jean Martin Sam Ellis Doug Wilford David Acaster Derek Baron Trevor Bavage Andy Cooke David Fagg Kevin Frobisher Jean Martin Mick Mulligan
Student Notes Acids and Bases
Name: Class: Date: Student Notes Acids and Bases Many foods that we eat contain acids, such as lemons, oranges, apples, vinegar, grapes, and soda pop. Lemons and oranges contain citric acid, while apples
2. What characteristic of water makes it the universal solvent? Nonpolar large molecules long-chain hydrocarbon molecules polar
PS Chemistry Chapter 22 & 23 Review Test Date Chapter 22 Suggestions for Studying Section 1 Know that a solution is made up of a solute and solvent. Be able to provide an example of a solute and a solvent.
Introduction. How to use this pack. Extra materials
Introduction contains worksheets to cover lessons when the teacher is absent. The pack is aimed at Years 7, 8 and 9 and is based around the requirements of the National Curriculum. It is divided into three
Unit 5 ACIDS, BASES & SALTS
Chemistry Form 3 Page 50 Ms. R. Buttigieg Unit 5 ACIDS, BASES & SALTS See Chemistry for You Chapter 12 pg. 142 onwards. See GCSE Chemistry Chapter 7 pg. 95 onwards INTRODUCTION ACIDS Acids have a ph less
the universal solvent
Chapter 7: Acids, Bases, and Solutions Solution a homogeneous mixture Solutions have the same properties throughout, containing solute particles (molecules or ions) that are too small to see Solvent the
Friday, 09/09/16. Topic: Acids, Bases & Salts (I) Essential Question: By the end of today, Explain differences in acids, bases & salts
Friday, 09/09/16 P.S.1; P.S. 2-11: Distinguish between chemical and physical properties and changes. Essential Question: How do we differentiate between acids, bases and salts? By the end of today, IWBAT
Page 1 of 14. Website: Mobile:
Question 1: You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red
Chapter 15 Study Questions
Chapter 15 Study Questions Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which of the following describes lipids? a. used to store energy
An acid made from sulphur, oxygen and hydrogen. A chemical with a ph value. of 8 or more.
A with a ph value of 8 or more. An acid made from sulphur, oxygen and hydrogen. Alkali Sulfuric Acid Red and blue paper used to tell if a substance is an acid or alkali. Very reactive metal element. Half
ie) HCl (aq) H + (aq) + Cl - (aq) *Like all equations, dissociation equations are written in balanced form
Acids and Bases Acids - substances which dissolve in water to form H + ions in solution ie) HCl (aq) H + (aq) + Cl - (aq) *Like all equations, dissociation equations are written in balanced form a) contain
Lesson Five: Acids, Bases, ph, and Buffers
Lesson Five: Acids, Bases, ph, and Buffers Arrhenius Acids and Bases Acids and bases can be defined a number of ways. One of the oldest and most common ways is the definition according to Arrhenius, named
Unit 13 Acids and Bases E.Q. What are the differences between acids and bases?
Unit 13 Acids and Bases E.Q. What are the differences between acids and bases? What are Properties of Acids? They taste sour (don t try this in lab). They can conduct electricity. Can be strong or weak
Acids and Bases. Acids
1 Acids and Bases Acids Although some acids can burn and are dangerous to handle, most acids in foods are safe to eat. What acids have in common, however, is that they contain at least one hydrogen atom
Paper 1 Answer all questions. Each question is followed by four options, A, B, C and D. For each question, choose one answer only.
hapter 12 Water and Solution Paper 1 nswer all questions. Each question is followed by four options,,, and. For each question, choose one answer only. 1. Solution X shows the characteristics below: mong
7. In order to allow contraction in cold weather, overhead cables should be A. covered in thick heat insulation. B. warmed occasionally in cold weathe
Mid-Year Examination 2007-2008 Integrated Science Form 2 Name : Time allowed: 1hr. 15mins. Class : ( ) Paper total: 100 marks Answer all the questions on the answer sheets provided Section A: Multiple
Section Four Structured questions
Section Four Structured questions 1 For each of the following experiments, state ONE observable change and write a chemical equation for the reaction involved. a) Magnesium strip is added to dilute hydrochloric
H 2 SO 4. HCl. HNO 3 nitric acid. TOPIC: Acids and Bases. e.g. HCl! H + + Cl - sulphuric acid. hydrochloric acid
TOPIC: Acids and Bases Learn these formulae! H 2 SO 4 sulphuric acid HCl hydrochloric acid Acids, especially concentrated acids, are corrosive: you need eye protection and gloves. HNO 3 nitric acid What
Acids Bases and Salts
Acids Bases and Salts (By : Arvind Kumar, for class 10 X) Question 1: You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and
Families of Chemical Compounds. Chapter 9
Families of Chemical Compounds Chapter 9 Groups of Compounds Compounds are grouped based on physical and chemical properties Types: Organic, Acids, Bases, and Salts Acids and Bases Examples of Acids Aspirin
Wherever chemical solutions are involved, ph matters. Some
47 Acids, Bases, and the ph Scale R EA D I N G Wherever chemical solutions are involved, ph matters. Some important chemical reactions, such as those involved in corrosion of iron or digestion of food,
Naming salts. Metal Acid Salt. Sodium hydroxide reacts with Hydrochloric acid to make Sodium chloride
Naming salts A salt is any compound formed by the neutralisation of an acid by a base. The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second
Dushan [δβ] BOODHENA 1
![Dushan [δβ] BOODHENA 1](/thumbs/80/82205169.jpg "Dushan [δβ] BOODHENA 1")
CHEMISTRY SUMMARY FOR THE FORM 3 NATIONAL ASSESSMENT 1. Define the term element. An element is a pure substance that cannot be broken down into simpler substances by any ordinary chemical process. 2. Define
! "#$%&'$!()! *+&$(,)#$! *+&$(,)#$! *+&$(,)#$!
Learning Checkpoint, p. 197 1. A solution with a ph of 11 is basic. 2. A solution with a ph of 5 is acidic. 3. The ph of pure water is 7 (neutral).! "#$%&'$!()! *+&$(,)#$! 4. No, litmus paper does not
CLASS-VII DAV PUBLIC SCHOOL SEC-14 & 48 GURGAON SUB: SCIENCE TOPIC: ACIDS, BASES AND SALTS
A. Choose the correct option/options: 1. Which of the following is not an indicator? a. Blue litmus b. Red Litmus. c. Turmeric d. Digene 2. Which of the following is a strong acid? a. Nitric acid b. Citric
Chapter 14. Preview Then skip to section 2. Section 1 Ionic and Covalent Compounds. Section 2 Acids and Bases. Section 3 Solutions of Acids and Bases
Chemical Compounds Preview Then skip to section 2 Section 1 Ionic and Covalent Compounds Section 2 Acids and Bases Section 3 Solutions of Acids and Bases Section 4 Organic Compounds Concept Mapping Section
Acids and Alkalis. Looking at acids and alkalis. 1 hydrochloric. 2 sour. 3 bases. 4 ionize, ionization. 5 hydrogen. 6 mobile ions.
Topic 4 Acids and Alkalis Section A Fill in the blanks Unit 1 Looking at acids and alkalis 1 hydrochloric 2 sour bases 4 ionize, ionization 5 hydrogen 6 mobile ions 7 basicity 8 monobasic 9 dibasic 10
Edexcel GCSE Chemistry. Topic 3: Chemical changes. Acids. Notes.
Edexcel GCSE Chemistry Topic 3: Chemical changes Acids Notes 3.1 Rec that acids in solution are sources of hydrogen ions and alkalis in solution are sources of hydroxide ions Acids produce H + ions in
S4 CHEMISTRY SUMMARY NOTES
S4 CHEMISTRY SUMMARY NOTES 1. The Mole One mole of a substance = GRAM FORMULA MASS e.g. H 2 SO 4 RAM from databook pg.7 2H 2 x 1 = 2 1S 1 x 32 = 32 4O 4 x 16 = 64 98g Mass = number of moles x Mass of 1
Railways (Group-D & ALP) Science Questions with solution
Railways (Group-D & ALP) Science Questions with solution RRB Science MCQs Quiz 5 Directions: Study the following questions carefully and choose the right answer: 1. The process of dissolving an acid or
Downloaded from
CHAPTER 2--ACIDS, BASES AND SALTS Acids: Substances which turn blue litmus solution red are called acids. Acids are sour in taste Bases: Substances which change red litmus solution blue are called bases.
Acids and acid rock drainage
direct environmental impacts of mining at lihir high school booklet 3 page 14 Acids and acid rock drainage Could acid from the mine damage our oceans? This leaflet explains all about acids and acid rock
BUT FIRST LET S REVIEW IONS AND BONDING. What is the Lewis dot diagram for Magnesium? 2+ 2-
ELECTROLYTES BUT FIRST LET S REVIEW IONS AND BONDING What is the Lewis dot diagram for Magnesium? Mg 2 2- S What is the Lewis dot diagram for Sulfur? How would these 2 elements complete the octet rule?
5.1. ? Create a Quiz. Acids and Bases. Before You Read. What are acids and bases? What is ph? What are ph indicators?
Acids and Bases Textbook pages 220 233 Section 5.1 Summary Before You Read Many acids and bases can be found in your home. Describe one acid and one base that you are familiar with. Record your answer
Acids, Bases, and Salts
Acids, Bases, and Salts 1 An acid is a substance that releases hydrogen ions when it dissociates. H +1 Cl -1 Cl -1 H +1 2 An acid is a substance that releases hydrogen ions when it dissociates in water.
97 MOLECULAR AND IONIC EQUATIONS
97 MOLECULAR AND IONIC EQUATIONS - Ions that show up IN THE SAME FORM on the left and right sides of a chemical equation are called SPECTATOR IONS. If we rewrite an ionic equation to leave out the spectator
Experiment 8 - Chemical Changes
Experiment 8 - Chemical Changes When a chemical change occurs, the chemicals that you start with are changed into different chemicals. We know when this happens because the new chemicals have different
Matter Questions. Pure Substances Questions. 1. How is matter classified? 2. What is a pure substance? Give an example of a pure substance.
Unit 6 ~ Learning Guide Name: Instructions: Using a pencil, complete the following notes as you work through the related lessons. Show ALL work as is explained in the lessons. You are required to have
mohd faisol mansor/chemistry form 4/chapter 7 CHAPTER 7 ACIDS AND BASES HCl (g) H 2 O H + (aq) + Cl - (aq) NaOH(s) H 2 O Na + (aq) + OH - (aq)
CHAPTER 7 ACIDS AND BASES Arrhenius Theory An acid is a chemical compound that produces hydrogen ions, H + or hydroxonium ions H3O + when dissolve in water. A base defined as a chemical substance that
CHEMISTRY 2b SUMMARY
CHEMISTRY 2b SUMMARY Items in ITALLICS are HIGHER TIER NLY C2.4.1 RATES F REACTIN Speeding up, or slowing down, chemical reactions is important in everyday life and in industry The rate of a chemical reaction
Chapter 5 Notes Science 10 Name:
5.1 Acids and Bases Many familiar compounds are acids or bases. o Classification as acids or bases is based on chemical composition. Acids and bases can be very dangerous. o Both can be very. o NEVER try
1. Acids, Bases and Salts
Eupheus Learning 1. Acids, Bases and Salts Study Material for Grade 7 Chemistry Overview Acids and Bases Identification Neutralization Salts Abhay s mother boiled an egg for him. Since it was very hot
Acids and Bases. Say Thanks to the Authors Click (No sign in required)
Acids and Bases Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) To access a customizable version of this book, as well as other interactive content, visit www.ck12.org
Homework Acids and Alkalis
S2 Homework Acids and Alkalis This booklet is split into the main areas of the topic. Each main area has three different spice levels which tell you about the difficulty of the homework. Each week your
2B Air, Oxygen, Carbon Dioxide and Water
Air, Oxygen, Carbon Dioxide and Water Air, oxygen and carbon dioxide are important chemicals in our everyday lives. Knowledge of their properties helps us to develop an understanding of the role they play.
ELECTROLYTES & NEUTRALIZATION
ELECTROLYTES & NEUTRALIZATION BUT FIRST LET S REVIEW IONS AND BONDING What is the Lewis dot diagram for Magnesium? Mg 2 2- S What is the Lewis dot diagram for Sulfur? How would these 2 elements bond? What
Chemical Reactions and Equilibrium Acid/Bases Redox. Revision What is a chemical reaction? What factors affect the rate of reaction?
Chemistry Fundamental Topics These notes will provide a brief coverage of topics that will be important for your Course in instrumentation. The notes are supplementary to the Instrumentation notes and
REACTIONS OF ACIDS. J:\Science\Chemistry\Stage 1 Notes\Acids & Bases\Reactionsofacids.doc
REACTIONS OF ACIDS 1. Acids taste sour We do not attempt to taste strong acids as they are too dangerous. They do taste sour, but then they proceed to destroy cells on your tongue and mouth. If you vomit,
National 4 Unit Rates of Reaction 2. Atomic Structure 3. Acids & Bases 4. Energy Changes. Homework
National 4 Unit 1 1. Rates of Reaction 2. Atomic Structure 3. Acids & Bases 4. Energy Changes Homework 1 2 Homework 1 - Rates of Reaction Decide which of the following are True or False: 1. Increasing
Lesson-5 Acids, bases and salts
NAME: Grade -7(CHEMISTRY) Worksheet Roll No: Lesson-5 Acids, bases and salts Q.1 Write properties of acid. Ans: Acids have sour taste. Acids turns blue litmus into red. Acids react with metals and release
SNC2D CHEMISTRY 3/12/2013. CHEMICAL REACTIONS L Neutralization Reactions (P ) ph & Plants. ph & Plants
SNC2D CHEMISTRY CHEMICAL REACTIONS L Reactions (P.204-212) ph & Plants Growing plants for a living can be risky. Many factors can affect the success of a crop, from weather conditions to the nutrient content
Physical Science Lecture Notes Chapters 17, 18 & 19
Physical Science Lecture Notes Chapters 17, 18 & 19 I. 17-1: Matter & Its Changes a. Changes in matter i. Physical Changes Alters form or appearance but doesn t change it into another substance ie. Water
The substances that you begin with in a chemical reaction are called the reactants; the substances that are produced are called the products.
Name: Everyone here has an understanding of what a chemical reaction is, we have all seen the movie of the scientist pouring acid on a metal and the metal disappearing in a smouldering, fizzing reaction.
KS3 revision booklet chemistry
NAME KS3 revision booklet chemistry Use this booklet to help you revise the chemistry you have studied in Key Stage 3. There are quizzes you can use to test yourself, and diagrams to remind you of key
Which fertiliser would improve the quality of this soil most effectively?
1 farmer s soil is very low in both nitrogen (N) and phosphorus (P). Which fertiliser would improve the quality of this soil most effectively? 2 Which compound is not used as a fertiliser? ammonium sulfate
Fill in as many empirical properties for acids and bases as you can...
Fill in as many empirical properties for acids and bases as you can... Tastes sour Turn blue litmus red ph less than 7 Neutralize bases React w/ active metals to produce H 2(g) React w/ carbonates to produce
4.5: Acids and Bases. SCH3U: Solutions and Solubility. Properties of Pure and Aqueous Substances. Arrhenius Theory. Acid:
4.5: Acids and Bases Properties of Pure and Aqueous Substances Arrhenius Theory Acid: Acids are sour tasting and corrosive. They react readily with active metals such as Zn, Ca, Mg and carbonate-based
IGCSE TEST_ (Ch. 2,3,4,5,6) Name... Date...
IGCSE TEST_ (Ch. 2,3,4,5,6) Name... Date... 1 Winston Churchill, a British Prime Minister, had his false teeth electroplated with gold. The teeth were coated with a thin layer of carbon and were then placed
Chem!stry. Assignment on Acids, Bases and Salts #
Chem!stry Name: ( ) Class: Date: / / Assignment on Acids, Bases and Salts #5 Write your answers in the spaces below: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 1. Which of the
- Double replacement reactions that form water are also called "neutralizations"
119 ACID/BASE REACTIONS (also called NEUTRALIZATION REACTIONS) - There are several stable molecules that may be formed in double replacement reactions, but the most common is WATER! - Double replacement
burette filled with sulphuric acid conical flask 25.0 cm 3 of sodium hydroxide(aq) concentration 2.24 mol / dm 3
1 Crystals of sodium sulphate-10-water, Na 2 SO 4.10H 2 O, are prepared by titration. burette filled with sulphuric acid conical flask 25.0 cm 3 of sodium hydroxide(aq) concentration 2.24 mol / dm 3 (a)
Acids, Alkalis and Carbonates
Acids, Alkalis and Carbonates Richard Harrison 2014 by pyro-gear.co.uk Chemistry is the study of how atoms of the various different elements interact. Fortunately they do interact, otherwise there would
5.1. Acids and Doses. Before You Read. Section. Summary. What are acids and bases? What is ph?
Acids and Doses Textbook pages 220-233 5.1 Summary Before You Read Many acids and bases can be found in your home. Describe one acid and one base that you are familiar with. Record your answer in the lines
Acids and Doses. Before You Read. Section 5.1. Summary. What are acids and bases? What is ph?
Acids and Doses Textbook pages 220-233 5.1 Before You Read Many acids and bases can be found in your home. Describe one acid and one base that you are familiar with. Record your answer in the lines below.
Write down everything that the word equation tells you about the reaction (Total 4 marks)
Q1. Here is a word equation for a chemical reaction. copper oxide + sulphuric acid copper sulphate + water Write down everything that the word equation tells you about the reaction.......... (Total 4 marks)
ANSWERS: Acids and Bases
1) a) Sulfuric acid + potassium hydroxide potassium ulphate + water H 2 SO 4 + 2KOH K 2 SO 4 + 2H 2 O ANSWERS: Acids and Bases b) As the KOH is added, the H 2 SO 4 is being neutralised until water is formed,
Unit 4. Compounds & Mixtures
Unit 4 Compounds & Mixtures Homework for Unit 4 1. Vocab for Unit 4; due: 2. Pg 81 (1-7), Pg 83 (1-7), Pg 85 (1-6) complete sentences; due: 3. Pg 149 (1-4), Pg 169 (1-4), Pg 173 (1-7) complete sentences;