WorksheetsUnit 3 Changes in Matter Review
Total questions: 10
Worksheet time: 12mins
Identify the type of the following equation:
__ P4 + __ O2 → __ P2O3
Single Replacement
Synthesis
Combustion
Double Replacement
Neutralization
Balance the following Chemical Equation:
__ Ca + __ HCl → __ CaCl2 + __ H2
1, 2, 1, 1
1, 1, 1, 1
1, 2, 1, 2
2, 1, 2, 1
Which of the following is an acid?
NaOH
HCl
NaCl
Ca(OH)2
Which of the following is a base?
H2SO4
MgCl2
KOH
CH3Cl
The half - life of radon - 222 is 3.8 days. How much of a 100 g sample is left after 15.2 days.
50.0 g
12.5 g
25.0 g
6.25 g
Where would an acid be on the pH scale?
less than pH 7
greater than pH 7
pH 7
Identify the type of the following equation:
2H2O ---> 2H2 + O2
Single Replacement
Decomposition
Double Replacement
Synthesis
Combustion
Where would a base be on the pH scale?
less than pH 7
greater than pH 7
pH 7
Which type of radioactive decay produces a helium nuclei?
Beta Decay
Gamma Decay
Alpha Decay
Matter is neither created nor destroyed in any process.
True
False
