WorksheetsChemistry Unit 4
Total questions: 25
Worksheet time: 13mins
The law of conservation of mass states: The total number of atoms is the same but they have been _____
Removed
Rearranged
Added
Some were taken out
Which is not evidence of a chemical reaction?
Change of heat and light
Formation of a gas
Looks pretty
Color Change
Reactants in an equation are on which side?
Left
Above
Right
Below
Products are on which side of an equation?
Right
Left
Below
Above
Which is not a diatomic element?
H2
F2
O2
Q2
Which chemical reaction is described here?
Substance bonded with Oxygen.
Decomposition
Synthesis
Combustion
Single Replacement
Which chemical reaction is described here?
The combination of two or more substances to form a compound.
Synthesis
Combustion
Double replacement
Decomposition
Which chemical reaction is described here?
Most of these reactions are ENDOTHERMIC
Decomposition
Synthesis
Combustion
Single Replacement
Which chemical reaction is described here?
Combustion
Decomposition
Double replacement
Single Replacement
Which chemical reaction is described here?
Single Replacement
Double replacement
Double replacement
Synthesis
Determine the type of replacement.
2CaO -> 2Ca + O2
Decomposition
Combustion
Syntheisis
SR
Determine the type of replacement.
Cu + I2 -> 2CuI
DR
Synthesis
SR
Decomposition
What does this symbol mean?
->
Produces, forms
solid
and, with
reactions are heated
What is a precipitate?
solid + gas
gas + liquid
liquid + liquid
solid + solid
What does aqueous mean?
Gas
Solid
Insoluble
Soluble
The law of conservation states:
Matt is neither ____ nor ____ in a chemical reaction.
added; subtracted
created; detroyed
pretty; ugly
fake; real
TRUE OR FALSE
Decomposition only has one reactant.
TRUE
FALSE
TRUE OR FALSE
Synthesis reactions only have one product
TRUE
FLASE
TRUE OR FALSE
Change of looks is not evidence of a chemical reaction.
FALSE
TRUE
TRUE OR FALSE
Net iconic equations cross off spectators
FALSE
TRUE
Which type of reaction is this?
CaCO3 -> CaO + CO2
Synthesis
DR
Decomposition
SR
Which type of reaction is this?
A + O2 -> B
Combustion
DR
SR
Decomposition
Which type of reaction is this?
CO2 + + H2O -> C6H12O6
DR
SR
Synthesis
Decomposition
AB + CD -> AD + CD
DR
Decomposition
SR
Synthesis
Overall did you like this unit? :)
Yes
Not my favorite
