Density And Chemical Physical Changes: Question Preview (ID: 12262)


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A rectangle has a volume of 14cm3 and a mass of 28 grams. What is its density?
a) 1 g/cm3 b) 44 g/cm3 c) 14 g/cm3 d) 2 g/cm3
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 mL b) 8 g/cm3 c) 5 g/cm3 d) 8 mL
Richard has a 4 cm cube. The cube has a mass of 384 grams. What is the density?
a) 6 g/cm3 b) 388 g/cm3 c) 96 g/cm3 d) 16 g/cm3
Lisa has a cereal box and wants to know the volume of the box. How should she calculate the volume?
a) Immerse the cereal box in a huge tub of water.(Don\'t pick this one) b) Measure the length, width, and height and subtract the numbers. c) Measure the length, width, and height and multiply the numbers together. d) Measure the length, width, and height and add the numbers together.
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.
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)
Which of the following is an example of a physical change?
a) roasting hotdogs b) photosynthesis c) a rusting tractor d) an ice cube melting
Which of the following is an example of a chemical change?
a) water freezing b) cookies baking in the oven c) mixing flour, sugar, and salt together d) cutting a sandwich in half
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
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
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