Atoms, Elements, Molecules, and Compounds

Question 1

Atom

Answer 1

The smallest particle of an element that can exist

Question 2

Element

Answer 2

The smallest particle of an element that can exist

Question 3

Molecule

Answer 3

The smallest particle of a substance that can exist. it is composed of two or more atoms

Question 4

Compound

Answer 4

a substance made of atoms from two or more elements

Question 5

proton

Answer 5

a particle of matter that has a positive electrical charge and found in the nucleus of an atom

Question 6

nutron

Answer 6

a particle of matter that has no electrical charge and found in the nucleus of an atom

Question 7

electron

Answer 7

a particle of matter that has and negative electrical change and travels around the nucleus of an atom

Question 8

Atomic number

Answer 8

= the number of protons in an elements atoms top number in the element box

Question 9

Mass number

Answer 9

Number of protons plus neutrons. bottom number in the element box.

Question 10

Chemical symbol

Answer 10

A one or two letter representation of an element.

Question 11

Subscript

Answer 11

tiny number to the right of the element symbol. tell you how many atoms of that element