Atoms,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 tat cannot be physically split intoion a more simple subtance.Each is made of one type of atom one type of atom. Carbon, mercury amd hydrogen are example.

Question 3

Molecule

Answer 3

The smallest particle of a sbstance that can exist.It is composed of 2 or more atoms.

Question 4

Compund

Answer 4

A substance made of atoms from 2 or more elements.

Question 5

Proton

Answer 5

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

Question 6

Neutron

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 a negative eletrical charge and travels around the nucleus of an atom.

Question 8

Atomic number

Answer 8

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

Question 9

Mass number

Answer 9

Number of protons plus netrons. Bottom number ain the element box.

Question 10

Chemical symbol

Answer 10

A on or 2 better representation of an element.

Question 11

Subscript

Answer 11

Tin number to the right of the element symbol. Tells you how many atonms of that element.