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 that cannot be physically split into a more simple substance. Each is made of one type of atom. carbon, 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

Protons

Answer 5

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

Question 6

Neutron

Answer 6

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

Question 7

Atomic Number

Answer 7

number of protons top number in the element box

Question 8

Election

Answer 8

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

Question 9

mass number

Answer 9

number of protons plus neotrons bottom number in the element box

Question 10

Chemical symbol

Answer 10

A one or two letters representation of an element

Question 11

Subscript

Answer 11

tiny numbers to the right of the element symbol. Tells you how many atoms of that atoms