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Matter And Changes
Test Description: Students will identify what happens to matter during physical and chemical changes. Additionally students will identify changes of state.
Instructions: Answer all questions to get your test result.
1) Which statement correctly describes both gases and liquids?
A
Their volumes change when they are in different containers.
B
Their shapes stay the same in any container
C
Their shapes change when they are in different containers
D
Their volumes stay the same in any container
2) Which of the following is an example of physcial change?
A
Hydrogen combined with oxygen forms water
B
Sulfur combined with oxygen produces sulfur dioxide
C
Iron exposed to air produces rust
D
Liquid nitrogen exposed to air becomes nitrogen gas
3) Which of the following is a characteristic of all chemical changes?
A
A different state of matter is produced
B
Some mass is converted to energy
C
Some form of light is given off.
D
A new material is formed
4) A child put a cup of kool-aid in the freezer to make it into a ice pop. This is an example of....
A
liquid changing to a gas
B
liquid changing to a solid
C
gas changing to a liquid
D
solid changing to a liquid
5) A pot on the stove containing water is heated. As the water boils the molecules -----
A
get smaller
B
move slower and closer together
C
get larger
D
move faster and farther apart
6) In making a stromboli sandwich, which process involves a chemical change?
A
slicing pepperoni
B
spreading cheese onto the sandwich
C
mixing the spices for the sauce
D
baking the stromboli bread to form the crust of the sandwich
7) Which situation provides the best evidence that a chemical reaction is taking place?
A
A liquid freezing in the freezer to become a solid.
B
A chemical completely dissolving in water and the temperature of the solution remains the same.
C
A precipatant (solid) forming as two liquids are poured together into a beaker.
D
A metal strip hammered into a flat sheet.
8) Roger combines vinegar with baking soda to demonstrate a chemical reaction. What should he be looking for to determine that a chemical reaction has occured?
A
formation of bubbles
B
a solid turning to a liquid
C
a reduction in total mass
D
the disappearance of atoms
9) Which action will result in a product with new chemical properties?
A
breaking a mirror
B
cutting wood
C
popping popcorn
D
shredding a newspaper
10) Which is an example of a chemical reaction?
A
sugar dissolving
B
glass melting
C
nails rusting
D
alcohol evaporating
11) Which of these is an example of a physical change?
A
melting ice
B
burning leaves
C
rusting metal
D
baking cake
12) Sally is investigating physical and chemical changes using eggs, she did the following four actions: Boiled; Cracked; Fried; Scrambled. Which action describes a physical change?
A
cracked
B
scrambled
C
fried
D
boiled
13) Which of the following represents a chemical reaction?
A
a cake baking in the oven
B
ice cubes forming in a freezer
C
ice cream melting in a bowl
D
a sugar cube dissolving in water
14) A balanced chemical equation reflects the idea that the mass of the products
A
equals the mass of the reactants
B
it is not related to the mass of the reactants
C
is less than the mass of the reactants
D
is greater than the mass of the reactants
15) The random molecular motion of a substance is greatest when the substance is
A
solid
B
gas
C
liquid
D
frozen
16) Solids have a definite shape and volume. This is because
A
the molecules in solids move past each other easily
B
the molecules in solids do not move at all
C
the molecules in solids stay in a definite shape and vibrate
D
molecules in solids move freely in all directions
17) The random molecular movement of a substance is at its greatest when the substance is
A
condensing
B
frozen
C
a liquid
D
a gas
18) Solids have definite shape and volume. This is because
A
the molecules in solids do not move at all
B
the molecules in solids stay in definite close location and vibrate
C
the molecules that make up a solid move freely around one another
D
the molecules in solids move past each other and flow
19) Which of the following forms of energy is released or absorbed in most chemical reactions?
A
sound
B
light
C
electricity
D
heat
20) Which of the following is an example of a chemical change?
A
burning a candle
B
melting a stick of butter
C
cutting an apple into slices
D
freezing water to make ice
*select an answer for all questions
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