Atoms, Elements, Molecules, and Compounds

Question 1

Atom

Answer 1

The smallest particle of a element that can exist.

Question 2

Element

Answer 2

A pure chemical substance that cannot be physically split into a more simple substance, Each is made of one type of atom. Carbo mercury and hydrogen are examples.

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

Question 6

neutron

Answer 6

A particle of matter that has no electrical charge and forms part of the nucleus of a atom.

Question 7

Electron

Answer 7

A particle of matter that has a negative electrical charge

Question 8

Atomic Number

Answer 8

Number of protons Top number in the element box.

Question 9

Mass Number

Answer 9

Number of protons plus neutrons. Bottom number in the elements box

Question 10

Chemical symbol

Answer 10

A one or two letter representation of a element

Question 11

Subscript

Answer 11

Tiny number to the right of the element symbol Tells you how many atoms of that element