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15 Cards in this Set

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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
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
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
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
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
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
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
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
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
25. The density of a substance depends on mass and ______
a)weight
b)length
c)substance
d)volume
25.

d)volume
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
27. What units should you use when measuring volume with a graduated cylinder?
a) cm
b) mL
c) cm3
d) g
27.

b)mL
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
29. When saltwater evaporates what is left?
a)Nothing
b)Salt
c)Heat
d)Water
29.

b) salt
30. Salt and iron filings stirred together become a
a)Compound
b)Mixture
c)Element
d)Molecule
30.

b) mixture