Science pg 309-311

Question 1

atoms are composed of still smaller particles of matter called ______

Answer 1

subatomic particles

Question 2

central core of an atom

Answer 2

nucleus

Question 3

______ carry a positive electric
charge

Answer 3

protons

Question 4

The number of protons in the nucleus is the atom’s ______

Answer 4

atomic number

Question 5

electrically neutral, having no electric charge

Answer 5

neutrons

Question 6

Atoms that are the same element (same atomic number) but have different numbers of neutrons are ________ of that element

Answer 6

isotopes

Question 7

protons and neutrons are composed of even smaller particles called ____

Answer 7

quarks

Question 8

True or false: Three quarks are needed to make a proton or a
neutron

Answer 8

true

Question 9

a form of the strong nuclear force

Answer 9

color force

Question 10

found outside the nucleus and carries a negative electric charge equal in strength to the positive charge of a proton

Answer 10

electron

Question 11

concentric layers that surround the nucleus that can only hold a certain number of electrons

Answer 11

electron shell

Question 12

True or false: an atom normally has a different number of protons and electrons

Answer 12

false - atoms normally have the same number of protons and electrons

Question 13

An atom that has an electric charge because of losing or gaining electrons

Answer 13

ion

Question 14

negative ions

Answer 14

anions

Question 15

positive ions

Answer 15

cations

Question 16

a substance that consists of ions is ____

Answer 16

ionic