WorksheetsChemical Reactions Unit Review
Total questions: 20
Worksheet time: 48mins
What type of chemical reaction is being described: A chemical reaction where energy is absorbed..
Exothermic reaction
Endothermic Reaction
Hydrothermic Reaction
Multithermic Reaction
Which symbol represents the chemical in an equation is in the liquid phase?
aq
s
g
l
Which symbol represents the chemical in an equation is in the solid phase?
l
aq
s
g
4Fe + 3O2 → 2Fe2O3
Which symbol represents the chemical in an equation is dissolved in water ?
aq
s
l
g
When balancing a chemical equation, ONLY the _________ can be changed ...
subscripts
coefficients
chemical formula
direction of the arrow
In the activity series of metals, which metal(s) will displace silver (Ag) from an acid?
only metals below silver (Ag)
only metals from Li to Na
any metal
only metals above silver (Ag)
What are the reactants of a neutralization reaction?
acid + base
base + salt
acid + salt
acid + water
What are the products of a neutralization reaction?
acid + base
base + salt
acid + salt
salt + water
The law of conservation of energy describes how the amount of total energy can change in a closed system. Which of these statements correctly describes this law?
The law of conservation of energy describes how the amount of total energy can change in a closed system. Which of these statements correctly describes this law?
The amount of kinetic energy in a system is a constant value.
An object can have potential energy or kinetic energy, but not both at the same time.
The amount of energy created when an object moves is equal to the energy destroyed when it stops moving.
The law of conservation of matter states that________
Matter can be created under pressure
matter cannot be created nor destroyed, matter can only change form
matter con be destroyed under high energy
__P4 + __O2 --> __P2O3
_CF4 + _Br2 -- _CBr4 + _F2
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2, 6, 3, 2
it is already balanced
4, 12, 3, 4
2, 1, 4, 5
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Decomposition
Combustion
Synthesis
Single Replacement
What type of chemical reaction is this one?
Ca + MgCl2 --> CaCl2 + Mg
Decomposition
Combustion
Synthesis
Single Replacement
3KOH + H3PO4 --> K3PO4 + 3H2O
Combination
Decomposition
Single replacement
Double replacement
2H2O2 →2 H2O + O2
Fe + CuSO4 -> Cu + FeSO4
