Sub-atomic particles and drawing atoms Flashcards Preview

Chemistry > Sub-atomic particles and drawing atoms > Flashcards

Flashcards in Sub-atomic particles and drawing atoms Deck (23):
1

What is the mass of an electron

1/1836

2

What is the mass of a neutron

1

3

What is the mass of a proton

1

4

What is the charge of an electron

- (negative)

5

What is the charge of a neutron

Neutral

6

What is the charge of a proton

+ (positive)

7

(Fill in the blank) Atoms are the............form an element can exist as

Simplest

8

What are atoms made up of

Electrons, neutrons, protons

9

Lithium is Li 7/3 (7 over 3)

Lithium is Li 7/3 (7 over 3)

10

Which number symbolises how many protons there are in this atom

The 3 (the smaller number)

11

Which number symbolises how many electrons there are in this atom

The 3 (the smaller number)

12

How can you work out how many neutrons there are in this atom

7-3 (big number take away small number)

13

What is the name for the bigger number

Atomic mass number

14

What is the name for the smaller number

Atomic number

15

What does the atomic mass number show us

Protons + neutrons

16

What does the atomic number show us

how many protons and electrons are in the atom.

17

What is the same about protons and electrons

Proton number = electron number

18

what is an atom ?

the smallest part of a chemical element that can exist

19

what is a molecule ?

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction

20

what is the structure of an atom ?

the atom has electrons surrounding a nucleus which contains protons and neutrons.

21

what is the atomic mass ?

the number of protons and neutrons

22

what is the atomic number ?

the number of protons

23

what is an isotope ?

if 2 or more atoms made up of the same elements have the same number of protons but a different number of neutrons