atoms elements and compounds

Question 1

What is the mass and charge of a proton?

Answer 1

Charge: +1

Question 2

What is the mass and charge of a neutron?

Answer 2

Mass: 1 unit
Charge: no charge

Question 3

What is the charge of an electron?

Answer 3

Charge: -1

Question 4

What is the nucleon number?

Answer 4

number of protons and neutrons in the nucleus of an atom/relative atomic mass

Question 5

What are isotopes?

Answer 5

atoms of same element with same proton number, different number of neutrons

Question 6

Why do isotopes have the same properties?

Answer 6

same properties because same number of electrons in outer shell

Question 7

Why is group 0 unreactive?

Answer 7

full outershell

Question 8

Why do atoms with more electron shells have higher energy levels?

Answer 8

Further away from nucleus

Question 9

What is the relative mass of a proton?

Answer 9

1

Question 10

What is the relative mass of a neutron?

Answer 10

1

Question 11

What is the relative mass of an electron?

Answer 11

0.0005

Question 12

What is an element?

Answer 12

A substance made of one type of atom

Question 13

What is a mixture?

Answer 13

substance contains two or more elements or compounds that are not chemically bonded together

Question 14

What is a compound?

Answer 14

substance made up of two or more different types of atoms joined together by chemical bonds

Question 15

Molecule

Answer 15

Two or more atoms covalently bonded together with a fixed number of atoms.

Question 16

Relative Atomic Mass

Answer 16

The weighted average mass of the isotopes of the element, relative to the mass of 1/12th of a C-12 atom.