Free Printable Chemistry Standards

Worksheets

Chemistry Standards

Total questions: 25

Worksheet time: 52mins

Name

Class

Date

Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride to produce Zinc (II) chloride and silver metal

Zn + AgCl → ZnCl₂+ Ag

ZnCl₂ + Ag → Zn + AgCl

ZnCl2 + Ag₂ → Zn + AgCl

Zn₂Cl + Ag → Zn + AgCl

Which is the correct chemical equation for the following: Barium Chloride combined with sodium sulfide yields barium sulfide and sodium chloride

BaCl + NaS → BaS+ NaCl

BaCl₂ + Na₂S → BaS+ NaCl

BaS+ NaCl → BaCl + NaS

BaCl₂ + Na₂S → BaS+ NaCl₂

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

2, 2, 1

2, 3, 2

1, 2, 2

1, 3, 1

Al + H₂SO₄ --> Al₂(SO₄)₃ + H₂
What coefficient goes in front of H₂?

Two elements react to form one product is an example of which type of chemical reaction?

combustion

decomposition

synthesis

single replacement

Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?

double replacement

decomposition

combustion

single replacement

What kind of reaction is this:
4Fe + 3O₂ → 2Fe₂O₃

Synthesis

Decomposition

Single Replacement

Double Replacement

What kind of reaction is this:
2H₂O₂ →2 H₂O + O₂

Synthesis

Decomposition

Single Replacement

Combustion

What kind of reaction is this:
Fe + CuSO₄ -> Cu + FeSO₄

Double Replacement

Decompostion

Single Replacement

Combustion

10.

Bromine is added to a container of sodium iodide, forming sodium bromide and iodine.

2 Br + 2 NaI → 2 NaBr + I₂

2 Br₂ + 2 NaI → 2 NaBr₂ + I₂

Br₂ + 2 NaI → 2 NaBr + I₂

Br + NaI → NaBr + I

11.

Calcium metal is heated in water, forming calcium hydroxide and hydrogen gas.

Ca + H₂O → CaOH + 2 H

Ca + 2 H₂O → CaOH₂ + H₂

Ca + 2 H₂O → Ca(OH)₂ + 2 H

Ca + 2 H₂O →Ca(OH)₂ + H₂

12.

Propane (C₃H₈) is burned in air, forming carbon dioxide gas and water.

C₃H₈→ CO₂ + H₂O

C₃H₈O₂ → CO₂ + H₂O

C₃H₈+ 5 O₂→ 3 CO₂ + 4 H₂O

2 C₃H₈+ 10 O₂→ 6 CO₂ + 8 H₂O

13.

Solutions of silver nitrate and magnesium chloride are mixed, forming silver chloride and magnesium nitrate.

AgNO₃ + MgCl₂→ AgCl₂ + MgNO₃

2 AgNO₃ + MgCl₂→ 2 AgCl + Mg(NO₃)₂

AgNO₃ + MgCl→ AgCl + MgNO₃

2 AgNO₃ + MgCl₂→ 2 AgCl + 2 MgNO₃

14.

What is the ratio of iron atoms to oxygen atoms in the compound for rust (Fe₂O₃)?

2:3

3:2

1:1

not able to be determined

15.

How many O's are in Al₂(SO₄)₃

16.

What usually forms the positive ion?

Metal

Non Metals

None

17.

Which equation shows magnesium sulfate plus sodium carbonate?

MgSO₄ + Na₂CO₃

MgCO₃+ Na₂SO₄

MgNa₂ + CO₃SO₄

Mg + S + Na + C

18.

aqueous zinc chloride reacts with dihydrogen monosulfide gas to yield a zinc sulfide precipitate and hydrochloric acid.

ZnCl₂ + H₂S→ 2HCl + ZnS

ZnCl + H₂S → SCl + ZnH₂

ZnCl₂ +2HS → 2HCl + ZnS₂

HS₂ + ZnCl → HCl + SZn₂

19.

A(n) ___ is a substance that is used up in a chemical reaction.

reactant

product

subscript

coefficient

20.

An equation that uses symbols to represent a chemical reaction is called a(n)

chemical equation

chemical reaction

chemical symbol

atomic mass

21.

Gaseous hydrogen and gaseous oxygen react to produce gaseous water

H2 (g) + O2 (g) => H2O (g)

H (g) + O (g) => H2O (g)

H (aq) + O (aq) => H2O (aq)

H2 (l) + O2 (l) => H2O (l)

22.

Solid aluminum and liquid bromine react to produce solid aluminum bromide

Al (s) + Br2 (l) => AlBr3 (s)

Al2 (s) + Br2 (s) => Al2Br2 (s)

Al (l) + Br (l) => AlBr (l)

Al (s) + Br (l) => AlBr (s)

23.

Solid zinc (II) oxide and aqueous hydrochloric acid react to produce aqueous zinc chloride and liquid water

ZnO (s) + HCl (aq) => ZnCl2 (aq) + H2O (l)

Zn2O (aq) + HCl (l) => ZnCl (aq) + H2O (l)

Zn2O2 (aq) + HCl (aq) => Zn2Cl2 (aq) + H2O (l)

ZnO (s) + HCl (aq) => ZnCl (aq) + H2O (aq)

24.

Solid calcium carbonate and aqueous hydrochloric acid react to produce aqueous calcium chloride, liquid water, and gaseous carbon dioxide

CaCO3 (s) + HCl (aq) => CaCl2 (aq) + H2O (l) + CO2 (g)

CaCO (s) + HCl (l) => CaCl (aq) + H2O (aq) + CO (g)

CaCO (aq) + HCl (aq) => CaCl (s) + H2O (aq) + CO (s)

Ca2CO3 (s) + HCl (aq) => Ca2Cl2 (aq) + H2O (l) + C2O2 (g)

25.

Solid barium reacts with liquid water to produce solid barium hydroxide and hydrogen gas

Ba (s) + H2O (l) => Ba(OH)2 (s) + H2 (g)

Ba (s) + H2O (aq) => BaOH (s) + H (g)

Ba(OH)2 (s) + H2 (g) => Ba2 (s) + H2O (l)

BaOH (s) + H (l) => Ba (s) + H2O (g)

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Chemistry Standards

Total questions: 25

Worksheet time: 52mins

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