Atoms, Elements, Molecules, and compound

Question 1

Atoms

Answer 1

The smallest particles of an element that can exist.

Question 2

elements

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

molecules

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 atom from two or more elements.

Question 5

proton

Answer 5

a particle of matter that has a positive electrical change and forms part of the nucleus of an atom.

Question 6

neutran

Answer 6

a particle of matter that has no electrical change and forms part of the nuclear of an atom.

Question 7

electron

Answer 7

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

Question 8

atomic number

Answer 8

number of protons.Top numbers in the element box.

Question 9

mass number

Answer 9

numbers of protons plus neutrons bottom number in the element box.

Question 10

sunscript

Answer 10

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

Question 11

chemical symbol

Answer 11

a one or two letter representation of an element.