Chapter 2: Atoms Molecules & Ions - Science Mcqs for Grade 7

1.

Dalton's model of atom states that an atom is

A. very small

B. hard sphere

C. indivisible

D. all of above

Answer & Solution Discuss in Board

2.

The number of protons and electrons in an atom is

A. different

B. same

C. average

D. constant

Answer & Solution Discuss in Board

3.

Electrons orbiting around nucleus bear

A. positive charge

B. negative charge

C. no charge

D. neutral charge

Answer & Solution Discuss in Board

4.

An atom's model that the atom is composed of electrons surrounded by a group of positive charge to balance the electrons' negative charges is called

A. Thomson's Model

B. Rutherford's Model

C. Dalton's Model

D. Bohr's Model

Answer & Solution Discuss in Board

5.

The positively charged particles of an atom are called

A. protons

B. neutrons

C. electrons

D. charges

Answer & Solution Discuss in Board

6.

Many helium atoms join together to form

A. ammonia gas

B. helium gas

C. oxygen gas

D. neon gas

Answer & Solution Discuss in Board

7.

Neutrons carry

A. positive charge

B. negative charge

C. neutral charge

D. no charge

Answer & Solution Discuss in Board

8.

Each 'ozone' molecule is made up of three

A. oxygen atoms

B. phosphors atoms

C. carbon dioxide atoms

D. nitrogen atoms

Answer & Solution Discuss in Board

9.

An atom is itself an entity and by charge it is

A. neutral

B. positive

C. negative

D. retrograde

Answer & Solution Discuss in Board

10.

A silver pendant is made up of atoms of

A. silver

B. gold

C. platinum

D. metals

Answer & Solution Discuss in Board

Practice MCQ Questions and answers on Chapter 2: Atoms Molecules & Ions - Science Mcqs for Grade 7

1. Dalton's model of atom states that an atom is

Answer & Solution

2. The number of protons and electrons in an atom is

Answer & Solution

3. Electrons orbiting around nucleus bear

Answer & Solution

4. An atom's model that the atom is composed of electrons surrounded by a group of positive charge to balance the electrons' negative charges is called

Answer & Solution

5. The positively charged particles of an atom are called

Answer & Solution

6. Many helium atoms join together to form

Answer & Solution

7. Neutrons carry

Answer & Solution

8. Each 'ozone' molecule is made up of three

Answer & Solution

9. An atom is itself an entity and by charge it is

Answer & Solution

10. A silver pendant is made up of atoms of

Answer & Solution

Read More Section(Science Mcqs)

1.

Dalton's model of atom states that an atom is

2.

The number of protons and electrons in an atom is

3.

Electrons orbiting around nucleus bear

4.

An atom's model that the atom is composed of electrons surrounded by a group of positive charge to balance the electrons' negative charges is called

5.

The positively charged particles of an atom are called

6.

Many helium atoms join together to form

7.

Neutrons carry

8.

Each 'ozone' molecule is made up of three

9.

An atom is itself an entity and by charge it is

10.

A silver pendant is made up of atoms of