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15 Cards in this Set
- Front
- Back
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16. The formula for water is H O. What does the “2” mean?
a)The number of molecules of water b)The number of protons in Hydrogen c)The number of Hydrogen atoms in a water molecule d)The number of Oxygen atoms in a water molecule |
16.
c)The number of Hydrogen atoms in a water molecule |
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17. Stephanie noticed that the liquid began to bubble when the baking soda was added to it.
This is an example of which skill of a scientist? a) prediction b) data analysis c) observation d) questioning |
17.
c)observation |
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18. Look at the periodic table in your binder or agenda. What is the correct order of the following elements from least to most number of protons? Gold, Oxygen, Hydrogen, Carbon
a) H – C – O – Au b) Au – C – O – H c) O – H – C – Au d) C – H – O – Au |
18.
a) H – C – O – Au |
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19. What happens when you boil salt water?
a) the water evaporates and the salt remains b) the water condenses and the salt remains c) the water and salt combine to form a compound d) they both disappear |
19.
a)the water evaporates and the salt remains |
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20. The freezing point of water is
a)100 degrees Celsius b)0 degrees Celsius c)98 degrees Celsius d)It depends on how much water you have |
20.
b) 0 degrees Celsius |
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21. The Boiling Point of water is
a)100 degrees Celsius b)0 degrees Celsius c)98 degrees Celsius d)It depends on how much water you have |
21.
a)100 degrees Celsius |
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22. What instrument do we use to measure mass?
a)graduated cylinder b)triple beam balance c)metric ruler d)microscope |
22.
b)triple beam balance |
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23. What instrument do we use to measure the volume of a liquid or an irregularly shaped object?
a)graduated cylinder b)triple beam balance c)metric ruler d)microscope |
23.
a)graduated cylinder |
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24. The way to turn water into ice is to:
a)add salt b)heat it c)remove the heat d)stir it |
24.
c)remove the heat |
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25. The density of a substance depends on mass and ______
a)weight b)length c)substance d)volume |
25.
d)volume |
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26. To determine the volume of a cube you will measure and calculate Length X Width X Height. What are the correct units to use with your final answer?
a) cm b) mL c) cm3 d) g |
26.
c)cm3 |
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27. What units should you use when measuring volume with a graduated cylinder?
a) cm b) mL c) cm3 d) g |
27.
b)mL |
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28. An object has a mass of 8 grams and a volume of 4 mL. What is its' density?
a)2 mL b)2 grams c)2 g/mL d)2 ounces |
28.
c) 2 g/mL |
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29. When saltwater evaporates what is left?
a)Nothing b)Salt c)Heat d)Water |
29.
b) salt |
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30. Salt and iron filings stirred together become a
a)Compound b)Mixture c)Element d)Molecule |
30.
b) mixture |
