C1- Atomic Structue

Question 1

What is an element?

Answer 1

Made of only one type of atom

Question 2

Compound

Answer 2

Two plus elements chemically bonded together

Question 3

What is a mixture?

Answer 3

Two plus elements not chemically bonded

Question 4

Atom History: 3) RUTHERFORD (2)

Answer 4

Gold foil experiment- atom mostly empty space (⬆️) and positive charge concentrated in centre (⤵️↪️)
Nuclear model

Question 5

Atom History: 1) DALTON (2)

Answer 5

Atom is indivisible

Spherical model

Question 6

Atom History: 4) BOHR (2)

Answer 6

Electron shells

Current model

Question 7

Atom History: 5) CHADWICK (1)

Answer 7

Discovered neutrons

Question 8

Atom History: 2) THOMPSON (2)

Answer 8

Discovered electrons

Plum pudding model

Question 9

Relative atomic mass of proton

Answer 9

1

Question 10

Relative atomic mass of electron

Answer 10

0 or 1/1850

Question 11

Relative atomic mass of neutron

Answer 11

1

Question 12

Ion

Answer 12

A charged particle produced by loss/gain of electrons

Question 13

Isotope

Answer 13

Atoms with same no of protons but different no of neutrons

Question 14

Conservation of mass

Answer 14

=mass of reaction = mass of products

Question 15

Chromatography

Answer 15

Solvent- mobile phase

Paper- stationary phase