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Which is an example of a chemical reaction?
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
The random molecular movement of a substance is at its greatest when the substance is
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
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?
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
Which of the following forms of energy is released or absorbed in most chemical reactions?
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
Which action will result in a product with new chemical properties?
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
Which of the following is an example of a chemical change?
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
The random molecular motion of a substance is greatest when the substance is
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
A child put a cup of kool-aid in the freezer to make it into a ice pop. This is an example of....
nails rusting
popping popcorn
a gas
heat
liquid changing to a solid
cracked
burning a candle
gas
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