Elements and Compounds Power Point Questions

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Jemimah Melanie Baldwin
6 years ago
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Name period date assigned date due date returned 1.

An is the fundamental material of which all is

What is the symbol for salt? What is salt made of? 6.

7. Atoms can form chemical with other atoms.

A contains atoms of two or more elements chemically

1 Name period date assigned date due date returned 1. The is the smallest unit of an element. 2. An is the fundamental material of which all is composed. It only contains type of atom. 3. What is the symbol for copper 4. What is the symbol for iron? 5. What is the symbol for salt? What is salt made of? 6. What is the symbol for chalk? What is chalk made of? 7. Atoms can form chemical with other atoms. When they bond, they can form or. 8. A contains atoms of two or more elements chemically bonded to form and different substances. 9. Photosynthesis Are there any elements? How many compounds do you see? What elements make up these compounds? 1

2 10. ellular respiration takes place in and cells. 11. During respiration, is broken down to release (ATP) that is used to power life. 12. respiration Are there any elements? How many compounds do you see? What elements make up these compounds? 13. An compound is any compounds that contains. All living things on Earth contain. Name Made of 2

3 Benedicts solution is used to test for simple sugars. The clear blue solution was discovered by American chemist Stanley Rossiter Benedict. When Bendedict s solution is added to a liquid and heated, the blue solution will change to green, yellow or brick red, depending on the amount of sugar and length of time the solution was heated. If no sugar is present, the solution remains blue. 19 What equipment is necessary when testing for the presence of sugar? A thermometer, litmus paper, water, hot plate B beaker, tongs, hot plate, water funnel, beaker, water D microscope, dropper, slide, heat shield 20 What safety precautions should be observed when testing for the presence of sugar? (there are 2, circle them) 3

4 Magnesium (Mg) is a silvery white metal and is the eighth most abundant element in the Earth s crust. It is also the fourth most abundant mineral in the human body, essential for healthy nerve and bone functions. Magnesium oxide (MgO) has man uses. It is used in medicines for heartburn relief, in fireworks and fertilizers, and is added to concrete to absorb moisture. Hayden s teacher produced small amount of magnesium oxide during a classroom demonstration by attaching a thin strip of magnesium ribbon to a ring stand and igniting the ribbon with a lighter. She did not look at the intense bright light to avoid possible eye damage from the ultraviolet light. After several seconds, the magnesium strip burned through the entire length, leaving a white powdery substance behind. 21 Which properties of magnesium make it desirable for use in fireworks? F G Magnesium is flammable and produces an extremely bright light when ignited Magnesium absorbs moisture from the air as it burns, thus reducing the potential for fires. H Magnesium is slow burning and produces long-lasting flashes of light. J Magnesium powder that falls to the ground after a fireworks display is a beneficial plant fertilizer 22 The chemical change in this demonstration is MOST SIMILAR to A freezing water on the surface o a pond during winter. 23 What laboratory equipment is essential for this demonstration? F stop watch G thermometer B sunlight fading colors on clothe H balance burning wood in a campfire J safety goggles D shattering a windshield during hail storm 4

5 24 What are the four elements needed by plants and animals in the manufacture of protein? A carbon, oxygen, nitrogen, helium B carbon, hydrogen, nitrogen, sodium 25 Acetic acid is a compound found in vinegar. The chemical formula for acetic acid is H 3 OOH. How many different elements are in acetic acid? F 3 G 6 carbon, hydrogen, oxygen, potassium D carbon, hydrogen, oxygen, nitrogen H 9 J What substance could be represented by the X in the diagram below? carbon hydrogen oxygen nitrogen organic compounds proteins X DNA fats A carbohydrates B ozone carbon dioxide D water 5

Compound. Math Focus. What are compounds? What is a chemical reaction? How are compounds used in everyday life?

Compound. Math Focus. What are compounds? What is a chemical reaction? How are compounds used in everyday life? CHAPTER 3 2 Compounds SECTION Elements, Compounds, and Mixtures BEFORE YOU READ After you read this section, you should be able to answer these questions: What are compounds? What is a chemical reaction?