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Physical and Chemical Changes and The Atom NTI Day 3

Last updated over 2 years ago

8 questions

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Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

Question 7

7.

Question 8

8.

Who is credited with developing the plum pudding model?

John Dalton

Ernest Rutherford

J.J. Thompson

Niels Bohr

Which of the following subatomic particles is negatively charged?

Photon

Electron

Proton

Neutron

The nucleus of an atom contains...?

Only protons

Electrons and protons

Protons and neutrons

Neutrons and electrons

How many protons does an atom of Carbon contain?

12

6

8

14

What is a characteristic of a physical change?

It can be reversed

It involves a chemical reaction

It changes the object's composition

It cannot be undone

What happens in a chemical change?

It can easily be reversed

No new substances are formed

New substances are formed

Existing matter is rearranged

What is the smallest unit into which a substance can be divided without changing its chemical properties?

Compound

Molecule

Atom

Element

What determines the type of chemical reactions an atom can undergo?

The total number of electrons

The number of neutrons

The number of valence electrons

The size of the nucleus