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Chemistry Part II
Test Description: Acids bases pH physical change chemical change conservation of mass
Instructions: Answer all questions to get your test result.
1) Ice melting
A
Physical change
B
Chemical change
2) Change in state or phase
A
physical change
B
chemical change
3) Baking bread
A
chemical change
B
physical change
4) Combustion
A
chemical change
B
physical change
5) Matter is not created or destroyed in any physical or chemical change
A
Bernouilli's law
B
law of superposition
C
law of conservation of mass
D
theory of relativity
6) Who is credited with coming up with the law of conservation of mass
A
Lavoisier
B
Newton
C
Cartier
D
Einstein
7) This type of energy is the total energy of the motion of all of the particles
A
thermal
B
potential
C
endothermic
D
chemical
8) This type of energy is stored in the bonds between atoms
A
chemical
B
endothermic
C
thermal
D
potential
9) This type of chnage releases energy. Combustion is an example
A
exothermic
B
endothermic
10) Substances that undergo chemical change are called
A
coefficients
B
products
C
subscripts
D
reactants
11) New substances created by chemical reactions are called
A
subscripts
B
coefficients
C
products
D
reactants
12) Which is NOT evidence of a chemical change
A
change in size
B
formation of a precipitate
C
gas production
D
color change
13) this is a solid that sometimes forms from the mixing of liquidsi
A
precipitate
B
gas
C
emulsion
14) True or False.... All of the atoms present at the start of a reaction must be present at the end
A
true
B
false
15) This type of system does not allow matter to enter or leave. A jar over our burning candle is an example.
A
open
B
closed
16) Which is NOT true of acids
A
react with metals and carbonates
B
are corrosive
C
taste sour
D
turns litmus paper blue
17) Which is NOT true of bases
A
react with metals
B
feel slippery
C
turn litmus paper blue
D
taste bitter
18) This is a substance that will change color when it comes in contact with an acid or a base
A
pH
B
Colloid
C
Precipitate
D
Indicator
19) The products of neutralization are
A
acids and bases
B
ben and jerry
C
salt and water
D
soap and ammonia
20) This value is neutral on the pH scale
A
less than 7
B
more than 7
C
equal to 7
*select an answer for all questions
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