Physical Science B Final Review 1

Question 1

This model suggests that electrons do not travel in totally predictable orbits.

Accepted Answer

Modern Atomic Theory

Question 2

The mass of an atom with 5 protons, 6 Neutrons, and 5 electrons would be:

Accepted Answer

11

Question 3

This scientist performed the "Gold Foil" experiments discovering the nucleus.

Accepted Answer

Ernest Rutherford (about 1911)

Question 4

The theory that says atoms have a positively charged nucleus and negative electrons surround it

Accepted Answer

Modern Atomic theory

Question 5

Who thought atoms were different shapes and sizes, but essentially all made of the same thing

Accepted Answer

Democritus (about 380 BC)

Question 6

How big is an atom?

Accepted Answer

So Small there are 20 trillion copper atoms in one penny.

Question 7

How many electrons does a neutral Lithium atom have?

Accepted Answer

3

Question 8

How many protons does a Helium atom have?

Accepted Answer

2

Question 9

How many protons does an atom of Sulfur-36 have?

Accepted Answer

16

Question 10

Which element has atomic number 4?

Accepted Answer

Beryllium

Question 11

Electrons were discovered during the famous cathode-ray tube experiments by this scientist.

Accepted Answer

JJ Thomson (about 1897)

Question 12

Which part of an atom has a positive charge?

Accepted Answer

Proton

Question 13

How many neutrons does an atom of Beryllium-10 have?

Accepted Answer

6

Question 14

The nucleus of an atom contains which parts?

Accepted Answer

Protons and Neutrons

Question 15

This person believed all matter can be broken down into earth, water, wind, and fire

Accepted Answer

Aristotle (about 380 BC)

Question 16

This scientist developed the "Plum Pudding" model of the atom

Accepted Answer

JJ Thomson (about 1897)

Question 17

He discovered the electrons can "jump" between energy levels in an atom.

Accepted Answer

Niels Bohr (about 1922)

Question 18

AMU's are used to measure:

Accepted Answer

The mass of an atom

Question 19

Which part of an atom has a negative charge?

Accepted Answer

electron

Question 20

If an atom has 7 protons, what element is it?

Accepted Answer

Nitrogen

Questions 20