Free Printable SCIENCE 7 Monthly Exam

1.

State that mass is neither created nor destroyed in any chemical reaction.

a)

Law of conservative

b)

Law of mass

c)

Law of conservation

2.

The most fundamental building blocks of matter are atoms.

a)

Molecule

b)

Atoms

c)

Chemical reactions

3.

A single compound breaks down into its component parts or simpler compounds.

a)

Decomposition

b)

Single Replacement

c)

Synthesis

4.

Atoms can combine with other atoms to form molecules.

a)

Molecule

b)

Chemical Bonding

c)

Chemical reactions

5.

Reactants are on the __________side of a chemical reaction.

a)

Right

b)

Left

c)

Center

6.

Multiply the ___________ of each element by the subscript of the element to count the atoms.

a)

Coefficient

b)

Reactants

c)

Products

7.

Products are on the __________side of a chemical reaction.

a)

Right

b)

Left

c)

Center

8.

A pair of ions is taken from the solution in these reactions.

a)

Double Replacement

b)

Single Replacement

c)

Synthesis

9.

Two or more elements or compounds may combine to form a more complex compound.

a)

Decomposition

b)

Single Replacement

c)

Synthesis

10.

A more active element takes the place of another element in a compound and sets the less active one free.

a)

Decomposition

b)

Single Replacement

c)

Synthesis

11.

$Na3PO4+3KOH\ \rightarrow\ 3NaOH+K3PO4$

(a)

12.

$MgCl2+Li2CO3\ \rightarrow\ MgCO3+2LiCl$

(a)

13.

$Pb+FeSO4\ \rightarrow\ PbSO4+Fe$

(a)

14.

$CaCO3\ \rightarrow\ CaO+CO2$

(a)

15.

$P4+3O2\ \rightarrow\ 2P2O3$

(a)

16.

$2RbNO3+BeF2\ \rightarrow\ Be(NO3)2+2RbF$

(a)

17.

$2AgNO3+Cu\ \rightarrow\ Cu(NO3)2+2Ag$

(a)

18.

$2C5H5+Fe\ \rightarrow\ Fe(C5H5)2$

(a)

19.

$SeCl6+O2\ \rightarrow\ SeO2+3Cl2$

(a)

20.

$O3\ \rightarrow\ O+O2$

(a)

SCIENCE 7 Monthly Exam

Total questions: 20

Worksheet time: 26mins

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