Atomes, Elements, Molecules, and Compounds

Question 1

Atom

Answer 1

The smallest particle of an 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 Carbon mercury and hydrogen

Question 3

Molecule

Answer 3

The smallest particle of a substance the can exist. It is compose of two or more atoms

Question 4

compound

Answer 4

A substance made of atoms from two of more elements.

Question 5

Proton

Answer 5

A particle of matter that has a positive electrical charge and found in the nucleus f 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 negative electrical charge and travels around the nucleus of an atom.

Question 8

Atomic number

Answer 8

= The number of protons in a element 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

Question 11

Subscript

Answer 11

Tiny numbers to the right of the element symbol tells you ho many atoms of that element