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The Atom (Lesson 1 review)

Last updated over 6 years ago

9 questions

1

1

1

2

2

1

1

2

1

Question 1

1.

What is the atomic number of this atom?

Question 2

2.

Who first thought of the idea of atoms?

Mr. Newman

J.J. Thompson

Aristotle

Democritus

John Dalton

Question 3

3.

Isotopes are atoms with a positive or negative charge.

True

False

Question 4

4.

What does the mass number tell us about an atom?

Question 5

5.

What is the mass number of a boron isotope with 5 protons, 6 neutrons, and 5 electrons?

Question 6

6.

In the current model of the atom, where are the electrons found?

Where ever you left them

In the electron cloud

In energy shells

In the nucleus

Question 7

7.

Which particle in an atom has the least mass?

electron

proton

neutron

neucleus

Question 8

8.

Describe the contribution that Ernest Rutherford made to the atomic theory.

Question 9

9.

If I took away one electron from the Bohr model in question one, it would become a positive ion.

True

False