atoms

Question 1

atom

Answer 1

The smallest of 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 different elements.

Question 5

proton

Answer 5

a particle of matter that has a positive electrical charge and is 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 electrical charge and travels around the nucleus of an atom.

Question 8

Atomic number

Answer 8

+ the number of protons in the atoms of an element. the top number in the element box.

Question 9

Mass number

Answer 9

A number of protons plus neutrons. The bottom number in the element

Question 10

chemical symbol

Answer 10

A one or two letter representation of an element.

Question 11

subscript

Answer 11

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