Chapter 4 Test

Question 1

Atom

Answer 1

Smallest unit of element that has chemical properties

Question 2

Protons

Answer 2

positive charge

Question 3

Electrons

Answer 3

That have negative charge

Question 4

Neutrons

Answer 4

no charge

Question 5

Isotopes

Answer 5

A helium atom that has two neutrons is more massive the helium atom that have one neutron

Question 6

Matter

Answer 6

Anything that takes up space and has mass

Question 7

Element

Answer 7

A substance that cannot be broken down into simpler

Question 8

Physical property

Answer 8

can be observed without changing comp of substance

Question 9

Chemical properties

Answer 9

How a substance reacts with other substance

Question 10

Substance number

Answer 10

Atoms are very tiny, they are made up of even smaller parts

Question 11

Electron cloud

Answer 11

The electrons of an atom move in a certain in space

Question 12

Atomic numbers

Answer 12

The numbers of protons in nucleus of an atom

Question 13

Periodic table

Answer 13

Shows order according to their atomic number

Question 14

Mass numbers

Answer 14

Sum of the number of protons and neutrons in a atom

Question 15

Unified atomic

Answer 15

Substance particles is to be expressed easily to gram