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Density And Chemical Physical Changes
Test Description: Practice calculating density. read examples and identify if they are a chemical or a physical change.
Instructions: Answer all questions to get your test result.
1) A rectangle has a volume of 14cm3 and a mass of 28 grams. What is its density?
A
14 g/cm3
B
1 g/cm3
C
44 g/cm3
D
2 g/cm3
2) Rebecca put 30 mL of water in a graduated cylinder. She lowered a small toy until it was completely under water. The water rose to 35 mL. The mass of the toy is 40 grams.
A
5 g/cm3
B
8 g/cm3
C
5 mL
D
8 mL
3) Richard has a 4 cm cube. The cube has a mass of 384 grams. What is the density?
A
388 g/cm3
B
6 g/cm3
C
96 g/cm3
D
16 g/cm3
4) Lisa has a cereal box and wants to know the volume of the box. How should she calculate the volume?
A
Measure the length, width, and height and multiply the numbers together.
B
Immerse the cereal box in a huge tub of water.(Don\'t pick this one)
C
Measure the length, width, and height and subtract the numbers.
D
Measure the length, width, and height and add the numbers together.
5) If several liquids (with different densities) were placed in one jar, how could you tell which substance was more dense?
A
The liquid with the higher density would be in the middle of the jar.
B
You can\'t tell. All of the liquids would mix together.
C
The liquid with the higher density would be at the top of the jar.
D
The liquid with the higher density would be at the bottom of the jar.
6) Which of the following is NOT an indicator of a chemical change?
A
production of a gas
B
production of heat
C
change in size
D
production of a precipitate (solid)
7) Which of the following is an example of a physical change?
A
photosynthesis
B
an ice cube melting
C
roasting hotdogs
D
a rusting tractor
8) Which of the following is an example of a chemical change?
A
cutting a sandwich in half
B
cookies baking in the oven
C
water freezing
D
mixing flour, sugar, and salt together
9) Which of the following is an example of a chemical change?
A
cutting a pizza into four equal slices
B
wrapping paper ripped off of a present
C
a piece of notebook paper folded up into the shape of a diamond
D
the Statue of Liberty tarnishing
10) Which of the following is an example of a physical change?
A
a piece of paper folded into a fortune teller
B
gas bubbles being formed
C
cooking tamales
D
rusted nails in a fence
*select an answer for all questions
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