Atoms, Elements, Molecules, and Compunds

Question 1

The smallest particle of an element that exists

Answer 1

Atom

Question 2

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

Answer 2

Element

Question 3

The smallest particle of a substance that can exist. It its composed of two or more atoms.

Answer 3

Molecule

Question 4

a substance made of atoms from two or more different elements

Answer 4

Compounds

Question 5

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

Answer 5

Proton

Question 6

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

Answer 6

Neutron

Question 7

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

Answer 7

Electron

Question 8

= The number of protons in an element’s atoms. Top number in the elements box

Answer 8

Atomic Number

Question 9

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

Answer 9

Mass Number

Question 10

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

Answer 10

Sub Script

Question 11

A one or two letter representation of element

Answer 11

Chemical Symbol