Atoms

Question 1

If an atom has 7 electrons, 7 protons and 8 neutrons, it would be called a ___?

Accepted Answer

neutral atom

Question 2

Carbon-12 and Carbon-14 are both isotopes of carbon, which means they have different # of __?

Accepted Answer

neutrons

Question 3

Atoms can bond to form ____________.

Accepted Answer

molecules

Question 4

The number of protons determines the ___?

Accepted Answer

type of atom it is

Question 5

If an atom has more protons, it is called a __?

Accepted Answer

cation

Question 6

Which part of an atom makes up most of its mass?

Accepted Answer

nucleus

Question 7

The number of protons determines the ___?

Accepted Answer

type of atom it is

Question 8

The theory about the structure of matter is called

Accepted Answer

Kinetic Molecular

Question 9

Which of the following are examples of chemical changes?

Accepted Answer

new substance formed

Question 10

One of the two ancient Greek theories of matter is the _______model.

Accepted Answer

particle

Question 11

If Ca has a 2+ charge, atomic # of 20 and mass # of 35, how many e- does it have?

Accepted Answer

18

Question 12

Which part of an atom contain both protons and neutrons?

Accepted Answer

nucleus

Question 13

Matter is anything that has mass and volume.

Accepted Answer

true

Question 14

When 2 or more elements are chemically bonded together, we get a ___?

Accepted Answer

compound

Question 15

If an atom has more electrons, it is considered a[n] _?

Accepted Answer

anion

Question 16

When 2 or more elements are put together but NOT chemically bonded are called?

Accepted Answer

mixtures

Question 17

Atomic and molecular ions can be cations or anions.

Accepted Answer

true

Question 18

If Cl has -2 charge and an atomic # of 17 and a mass # of 35, how many e- does it have?

Accepted Answer

19

Question 19

An atom with the same # of protons that has a different # of neutrons is called a[n] ___.

Accepted Answer

isotope

Question 20

Which part of an atom makes up most of its volume?

Accepted Answer

electron cloud

Question 21

The basic building blocks of matter are __?.

Accepted Answer

atoms

Questions 21