Structure of an Atom Unit 2

Question 1

What is the 3 digit number for the maximum amount of electrons in each energy level?

Answer 1

2-8-8

Question 2

What is the smallest unit of an element?

Answer 2

atom

Question 3

What is another name for the number of protons in the nucleus of an atom?

Answer 3

atomic number

Question 4

Once you know the protons, what number should you look at on the periodic table to identify the element?

Answer 4

atomic number

Question 5

What is the full name of the mass of protons and neutrons?

Answer 5

average atomic mass

Question 6

What is the name of the negatively charged particle of the electron cloud?

Answer 6

electron

Question 7

What is all the outside area of an atom called?

Answer 7

electron cloud

Question 8

What particle is NOT found in the nucleus?

Answer 8

electrons

Question 9

What occupies most of the volume of an atom?

Answer 9

empty space

Question 10

If you add everything in the nucleus, you will get the _______?

Answer 10

mass

Question 11

A subatomic particle that has no charge and that is found in the nucleus of the atom is called?

Answer 11

neutron

Question 12

Protons never change number, so if the mass changes what particle might have changed?

Answer 12

neutron

Question 13

the dense positively charged region in the center of the atom

Answer 13

nucleus

Question 14

positively charged particle of the nucleus

Answer 14

proton

Question 15

What is the most important particle because it determines the identity of the element?

Answer 15

protons

Question 16

When looking at an atom model, what particle do you count to identify it?

Answer 16

protons

Question 17

What two particles have a mass of 1 amu and are found in the nucleus?

Answer 17

protons and neutrons

Question 18

What is the name of the particles that are smaller than the atom?

Answer 18

subatomic particles

Question 19

What are the electrons on the outermost energy level of an atom called?

Answer 19

valence electrons