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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
44 g/cm3
B
1 g/cm3
C
2 g/cm3
D
14 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
8 mL
B
5 g/cm3
C
8 g/cm3
D
5 mL
3) Richard has a 4 cm cube. The cube has a mass of 384 grams. What is the density?
A
6 g/cm3
B
96 g/cm3
C
16 g/cm3
D
388 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 add the numbers together.
B
Measure the length, width, and height and subtract the numbers.
C
Measure the length, width, and height and multiply the numbers together.
D
Immerse the cereal box in a huge tub of water.(Don\'t pick this one)
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 at the bottom of the jar.
B
The liquid with the higher density would be in the middle of the jar.
C
You can\'t tell. All of the liquids would mix together.
D
The liquid with the higher density would be at the top of the jar.
6) Which of the following is NOT an indicator of a chemical change?
A
production of heat
B
production of a precipitate (solid)
C
change in size
D
production of a gas
7) Which of the following is an example of a physical change?
A
an ice cube melting
B
roasting hotdogs
C
a rusting tractor
D
photosynthesis
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
mixing flour, sugar, and salt together
D
water freezing
9) Which of the following is an example of a chemical change?
A
the Statue of Liberty tarnishing
B
wrapping paper ripped off of a present
C
a piece of notebook paper folded up into the shape of a diamond
D
cutting a pizza into four equal slices
10) Which of the following is an example of a physical change?
A
cooking tamales
B
gas bubbles being formed
C
a piece of paper folded into a fortune teller
D
rusted nails in a fence
*select an answer for all questions
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