Atomic Structure

Question 1

What did Daltons model include what ideas?

Answer 1

-atoms cannot be broken down into anything simpler
-the atoms of a given element are identical to each other
-the atoms of different elements are different from one another
-during chemical reactions atoms rearrange to make different substances

Question 2

What was discovered in 1897?

Answer 2

Electrons

Question 3

When did the discovery of atoms having a nucleus with electrons around it?

Answer 3

1909-1911

Question 4

What was discovered in 1913?

Answer 4

Electrons occupy shells (energy levels)

Question 5

When we’re protons discovered?

Answer 5

1918

Question 6

When were neutrons discovered?

Answer 6

1932

Question 7

What do the nuclei of all atoms contain?

Answer 7

Subatomic particles called protons and neutrons

Question 8

Give the relative mass and relative charge for protons

Answer 8

Rm-1
Rc- +1

Question 9

Give the relative mass and relative charge for neurones

Answer 9

Rm-1
Rc- 0

Question 10

What’s the relative mass and relative charge of electrons

Answer 10

Rm- 1/1835
Rc- -1

Question 11

What’s the atomic number mean?

Answer 11

The amount of protons in the atoms nucleus

Question 12

Are the amount of protons and electrons the same or different?

Answer 12

Same

Question 13

How do you find the number of neutrons?

Answer 13

Mass number— atomic number

Question 14

What’s the definition of isotopes?

Answer 14

Atoms that have the number of protons, but different numbers of neutrons in their nuclei

Question 15

Give the calculation for relative atomic mass

Answer 15

Total mass of atoms / total number of atoms (35)