The Atom

Question 1

Atoms

Answer 1

• protons, neutrons, electrons

- what all elements and compounds are made off

Question 2

Electrons

Answer 2

• whizz around nucleus in orbitals that take up most of the volume
• relative mass = 0.0005
• relative charge =-1

Question 3

Proton

Answer 3

• RM = 1

- RC = +1

Question 4

Neutron

Answer 4

-RM = 1
RC = 0

Question 5

Mass number

Answer 5

-total number of protons and neutrons

Question 6

Atomic number

Answer 6

-number of protons which identify the element

Question 7

Neutral atoms

Answer 7

• no overall charge

- some number of protons and electrons

Question 8

Isotopes

Answer 8

• atoms with same number of protons but dif number of neutrons
• number and arrangement of electrons decide chemical properties means isotopes same chemical properties
• dif physical properties because it depends on mass of atom