Grade: 8 Subject: Chemistry

Transcription

1 Structure and Transformation of Matter Part 2 Grade: 8 Subject: hemistry ate: Nov

2 1 Which of the following statements are true about "matter"? Matter makes up everything. Matter takes up space Matter is made up of atoms Matter has mass. Multiple nswer E toms are the building blocks of matter. LT-1 I can define matter using the concepts of atoms. 2

3 2 hoose all of the following that are matter. E tree pencil air helium gas cell Multiple nswer LT-1 I can define matter using the concepts of atoms. 3

4 3 Which of the following is not matter? rock air heat water vapor LT-1 I can define matter using the concepts of atoms. 4

5 4 ccording to the Law of onservation of Matter, which statement is false? Matter can only be created by chemical means (reactions). Matter can't be created Matter can't be destroyed Matter can't be created or destroyed. LT-2 I can define the Law of onservation of Matter. 5

6 5 ccording to the Law of onservation of Matter... matter in = matter out. matter in does not equal matter out. matter in is greater than matter out. matter in is less than matter out. LT-2 I can define the Law of onservation of Matter. 6

7 6 Which answer would best illustrate the Law of onservation of Mass in this problem? 50 atoms of Na + 50 atoms of l... equals 100 atoms of Nal equals 50 atoms of Nal equals 75 atoms of Na and 25 atoms of l equals 25 atoms of Na and 75 atoms of l LT-2 I can define the Law of onservation of Matter. 7

8 7 Fifty grams of sugar is added to 50 grams of water making a total of 100 grams. The mixture is stirred until all of the sugar dissolves. The mass of the sugar water after dissolving would? increase stay the same decrease can't be determined LT-3 I can interpret a variety of evidence which supports the conservation of matter. 8

9 8 Ten grams of baking soda is added to 10 grams of vinegar (for a total of 20 g) in an airtight ziploc bag. The mass after mixing would. increase stay the same decrease can't be determined LT-3 I can interpret a variety of evidence which supports the conservation of matter. 9

10 9 Iron nails are dunked in water and are then placed inside a jar with an airtight lid. The nails and jar have a mass of 500 grams. t the end of 2 months, the nails have noticeably rusted. Would the mass of the nails/jar. increase stay the same decrease can't be determined LT-3 I can interpret a variety of evidence which supports the conservation of matter. 10

11 10 Identify all of the following statements that are true concerning elements. n element is a pure substance. n element is identified by its mass number. E n element can not be broken down any further and still be identified as an element. Each element is unique made of only one type of atom. n element is larger than an atom. Multiple nswer LT-4 I can define an element. 11

12 11 How many protons are in one Helium atom? LT-4 I can define an element. 12

13 12 hoose all of the following that determine the identity of an element. E atomic mass number of protons number of neutrons number of electrons atomic number Multiple nswer LT-4 I can define an element. 13

14 13 Which card does not belong in the element group? See attached page. LT - 5 I can use the definition of an element to classify items into similar categories. 14

15 14 Using your periodic table, identify the element that contains 16 protons. S Mg O F LT - 5 I can use the definition of an element to classify items into similar categories. 15

16 15 What element is represented on the cards? (See attached page if needed). Nitrogen Oxygen Magnesium arbon LT - 5 I can use the definition of an element to classify items into similar categories. 16

17 16 Which of the following properties is a "chemical" property? mass color compounds with H and l melting point LT - 6 I can classify substances into like groups based on chemical and physical properties, 17

18 17 Which of the following properties would be "physical" properties? E mass color compounds with H and l melting point reactivity Multiple nswer LT - 6 I can classify substances into like groups based on chemical and physical properties, 18

19 18 y what property have the cards been grouped? See attached page for cards. mass color state of matter compounds with H and l LT - 6 I can classify substances into like groups based on chemical and physical properties, 19

20 19 The undiscovered element would be most similar to which element(s)? Timmy oth Timmy and Gib l Timmy 12 l 27? Poe 31 oth l and Poe Gib 73 LT- 7 I can predict missing elements based upon existing patterns. 20

21 20 The mass of the undiscovered element would most likely be less than an't be determined Timmy 12 l 27? Gib 73 Poe 31 LT- 7 I can predict missing elements based upon existing patterns. 21

22 21 ased on chemical and physical properties, which element card would belong in a group with W and R? See attached page. LT- 7 I can predict missing elements based upon existing patterns. 22

23 22 Identify each statement that is true concerning metal elements in a group on the periodic table. Mass increases down a group. Multiple nswer tomic number increases down a group. Reactivity increases down a group Elements in a group have similar physical and chemical properties. LT- 8 I can describe patterns in periods and families in the Periodic Table. 23

24 23 Most elements on the periodic table are E solids gases metals nonmetals liquids Multiple nswer LT- 8 I can describe patterns in periods and families in the Periodic Table. 24

25 24 On the periodic table, elements in groups are... E mostly gases mostly solids mostly metals mostly nonmetals mostly metalloids Multiple nswer LT- 8 I can describe patterns in periods and families in the Periodic Table. 25

26 25 Elements in a row on the periodic table are called. group family column period LT - 9 I can explain how elements are organized on the periodic table based on reactivities, physical properties, groups, and periods. 26

27 26 Which of the following elements would be more reactive than a? K Rn Pb Mg LT - 9 I can explain how elements are organized on the periodic table based on reactivities, physical properties, groups, and periods. 27

28 27 Identify the trends that are true about a period. E Mass increases from left to right Multiple nswer Mass decreases from left to right Reactivity increases from left to right Reactivity decreases from left to right Elements in a period do not have similar properties LT - 9 I can explain how elements are organized on the periodic table based on reactivities, physical properties, groups, and periods. 28

29 28 s you move down a column on the periodic table, what happens to the reactivity of metals? reactivity increases reactivity stays the same reactivity decreases can't be determined LT-10 I can identify groups of elements with similar properties (metals, nonmetals, non-reactive 29

30 29 s you move from left to right across a period of metals, what happens to reactivity? reactivity increases reactivity stays the same reactivity decreases can't be determined LT-10 I can identify groups of elements with similar properties (metals, nonmetals, non-reactive 30

31 30 Elements on the periodic table with negative melting points would most likely be classified as. metals nonmetals metalloids can't be determined LT-10 I can identify groups of elements with similar properties (metals, nonmetals, non-reactive 31

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