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Changes In Matter Review
Test Description: Physical and Chemical Properties of matter, Physical and Chemical Changes, Law of Conservation of Matter
Instructions: Answer all questions to get your test result.
1) The freezing point of water is a ...
A
chemical property
B
physical property
2) Talc can be crushed into a fine powder. This is a ...
A
chemical property
B
physical property
3) Hunter is making a list of physical and chemical properties. Which choice should he not list as a chemical property?
A
radioactivity
B
toxicity
C
flamability
D
density
4) You have two cups with clear liquids in each. You put an ice cube in each. One cube floats, one cube sinks. You decide one cup contains water and one contains rubbing alcohol. What type of property of matter did you use to identify the liquids?
A
chemical property
B
magnetic property
C
physical property
D
freezing point property
5) You have a sample of an unknown substance. If you added MORE of the substance to that sample, which of the following would change?
A
its mass
B
its state of matter
C
its color
D
its luster
6) Silver is a white metal and is an excellent conductor. The density of silver is 10.49 g/cm3. Silver does not react with water but it does react with nitric acid. Silver tarnishes when exposed to air or light. Which is a physical property of silver?
A
density
B
does not react with water
C
tarnishes
D
reacts with nitric acid
7) Which is NOT a physical property?
A
color
B
flamability
C
mass
D
density
8) Which is NOT a chemical property?
A
reacts with oxygen
B
boiling point
C
a precipitate forms
D
neutralizes a base
9) When solid sodium metal is placed in water, energy is released and sparks fly as sodium hydroxide is formed. Which of these best describes this situation? The release of energy is a sign of a ___________ change.
A
endothermic
B
chemical
C
phase
D
physical
10) The baking soda looked like it dissolved in the vinegar. Sarah and Connor watched as the balloon expanded and filled with a gas. Was this a physical or chemical reaction and why?
A
chemical - gas produced
B
chemical - baking soda disappeared
C
physical - water bottle got hot
D
physical - baking soda dissolved
11) glass shattering in to pieces... bubblegum being stretched... a piece of metal expanding due to heat...These are all examples of
A
temperature change
B
phase change
C
chemical change
D
physical change
12) Maria and Miquel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the result of a chemical reaction. Miguel disagreed. What would you tell them to solve this argument?
A
It was a physical reaction since the fuse was lit and heat was produced.
B
It is an endothermic reaction because energy was added; therefore it is a chemical reaction.
C
It is a change of state, solid to gas, due to the addition of energy.
D
The color changes and the release of energy indicate a chemical reaction.
13) Which is a physical change?
A
freezing water
B
cooking an egg
C
rusting metal
D
burning wood
14) A change in _____ means that a chemical reaction has occurred.
A
the energy and kinds of atoms of the reacting substances
B
the properties and identity of the reacting substances
C
the kinds of atoms involved
D
the energy and mass
15) A pot of water is being heated on a stove. Bubbles form and condensation appears on the lid of the pot. Is this a physical or chemical change?
A
chemical
B
physical
16) A translucent, blue copper (II) sulfate solution is mixed with another solution and changes to a translucent lighter blue color. Is this a physical or chemical change?
A
chemical
B
physical
17) Ammonium nitrate solid dissolves in water and feels very cold. Is this a physical or chemical change?
A
physical
B
chemical
18) Red and blue paint are mixed together and the color purple appears. Is this a physical or chemical change?
A
chemical
B
physical
19) When an athlete gets hurt they apply sometimes an instant cold pack to the injury. The instant cold pack works by mixing two chemicals that create a chemical reaction. What evidence is there that a chemical reaction is taking place in the cold pack?
A
temperature change
B
change in color
C
change in odor
D
formation of a gas
20) A scoop of baking soda is added to a beaker containing vinegar. The baking soda disappears and bubbles are observed. This is an example of a _____________ change.
A
chemical
B
ionic
C
phase
D
physical
*select an answer for all questions
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