Chapter 2.1

Question 1

What three sub atomic particles make the atom?

Answer 1

Protons Neutrons Electrons

Question 2

How are isotopes of an element similar

Answer 2

Same number of protons and electrons, different neutrons

Question 3

How does a compound differ from its component elements

Answer 3

it has different physical and chemical properties

Question 4

main types of chemical bonds

Answer 4

Ionic and Covalent

Question 5

atom

Answer 5

smallest and basic unit of matter

Question 6

nucleus

Answer 6

made of protons/neutrons, center of atom

Question 7

electrons

Answer 7

negatively charged particle

Question 8

element

Answer 8

pure substance of one type of atom

Question 9

isotope

Answer 9

atoms of the same element that have different number of neutrons

Question 10

compound

Answer 10

a substance formed by chemical combination of two or more elements

Question 11

Ionic Bond

Answer 11

Formed when one or more electron is transferred from one atom to another

Question 12

Ion

Answer 12

Positively or negatively charged atoms

Question 13

Covalent bond

Answer 13

when electrons are shared between atoms(not transferred)

Question 14

Molecule

Answer 14

when atoms are joined by covalent bonds; smallest unit of most compounds

Question 15

Van der Waals Forces

Answer 15

a slight attraction between molecules when they are very close to each other