WorksheetsChemical & Physical Changes, Properties, and Metric System
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
Which of the following is a physical change?
a)
Burning Wood
b)
Rusting Iron
c)
Melting Ice
d)
Baking a Cake
2.
Which of the following is NOT a sign of a chemical change?
a)
Change in color
b)
Formation of a gas
c)
Change in shape
d)
Production of an odor
3.
What does the Law of Conservation of mass tell us?
4 lines
4.
What is a chemical change?
a)
A change that affects the physical properties of a substance.
b)
A change that affects the checmial composition of a substance.
c)
A change that is always reversible.
d)
A change that does not involve energy transfer
5.
Which of the following is an example of a physical property?
a)
Flammability
b)
Reactivity
c)
Luster
d)
Toxicity
6.
What is a precipitate?
a)
A gas produced in a chemical reaction.
b)
A solid that forms from mixing two liquids
c)
A liquid that evaporates quickly
d)
A substance that changes color when heated.
7.
What is the difference between a physical change and a chemical reaction?
a)
Physical changes are reversible, while chemical changes are not.
b)
Physical changes involve a change in chemical composition, while chemical changes do not.
c)
Physical changes involve a change in physical properties, while chemical changes involve a change in chemical composition.
d)
Physical changes give off heat, while chemical changes absorb heat.
8.
Which of the following is true about intensive properties?
a)
sample size DOES matter
b)
sample size doesn't matter
c)
an example would be how much something weighs
9.
You and your lab partner combine vinegar and baking soda in a flask and watch it bubble over. You measured the mass of the flask, vinegar, and baking soda before combining them and found it was 210g. After combining them, the total mass was 195g. What is the best explanation for this?
a)
Some mass was destroyed during the reaction.
b)
Gas escaped the flask after combining the vinegar and baking soda
c)
Some mass was created before the reaction.
10.
You have a 5 mL sample of vegetable oil that weighs 4.5 g. Given this information, what is the density of vegetable oil?
a)
1.11 g/mL
b)
5 g/mL
c)
0.9 g/mL
d)
0.5 g/mL
11.
How many kilometers are there in 4850 meters?
a)
0.000485 km
b)
4.85 km
c)
4,850,000 km
12.
What is the equivalent of 3.29 L?
a)
32.9 mL
b)
329 mL
c)
3290 mL
100 %
