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6th Grade Review
Test Description: Physical and Chemical changes and endo/exothermic reactions
Instructions: Answer all questions to get your test result.
1) Need a continuous energy source
A
exothermic reaction
B
endothermic reaction
2) leaves surroundings feeling cold
A
endothermic reaction
B
exothermic reaction
3) more energy needed to break bonds of reactants than is released
A
endothermic
B
exothermic
4) some energy is released as light
A
endothermic
B
exothermic
5) energy released is greater than energy needed to break bonds
A
exothermic
B
endothermic
6) some energy released as heat
A
endothermic
B
exothermic
7) cutting paper is an example of a
A
chemical change
B
physical change
8) bending metal is an example of
A
chemical change
B
physical change
9) an example of a physical change is
A
cooking an egg
B
cracking a glowstick
C
crushing a coke can
D
burning wood
10) an example of a chemical change
A
slicing an apple
B
melting ice
C
chewing food
D
rust
11) breaking chemical bonds means a ____________ change has occurred
A
chemical changes
B
physical changes
12) all changes of state are
A
chemical
B
physical
13) forming new bonds means a _____________change has occurred
A
chemical
B
physical
14) water turning to steam is a
A
physical change
B
chemical change
15) chemical changes form
A
old substances
B
changes of state
C
new substances
16) The BEST way to know a chemical change occurred
A
a new substance forms
B
bubble form
C
color change
D
no reaction occurs
*select an answer for all questions
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