Free Printable PHS Edexcel sC3

1.

What are the three particles that make up an atom? (tick all that apply)

a)

proton

b)

neutron

c)

electron

d)

ion

2.

What is the relative charge of a proton?

a)

+1 (positive)

b)

-1 (negative)

c)

0 (no charge)

3.

What is the relative charge of an electron?

a)

+1 (positive)

b)

-1 (negative)

c)

0 (no charge)

4.

What is the relative charge of a neutron?

a)

+1 (positive)

b)

-1 (negative)

c)

0 (no charge)

5.

What is the relative mass of a proton?

a)

1

b)

0

c)

-1

d)

1/1835

6.

What is the relative mass of a neutron?

a)

1

b)

0

c)

-1

d)

1/1835

7.

What is the relative mass of an electron?

a)

1

b)

0

c)

-1

d)

1/1835

8.

Which subatomic particles do you find in the nucleus of an atom?

a)

protons only

b)

protons and neutrons

c)

protons and electrons

d)

neutrons and electrons

9.

Who first came up with the idea of all matter being made up of tiny, hard spheres called atoms, that cannot be broken down into smaller parts?

a)

John Dalton

b)

JJ Thomson

c)

Ernest Rutherford

d)

James Chadwick

10.

Who discovered electrons, and came up with the idea of the "plum pudding" model?

a)

John Dalton

b)

JJ Thomson

c)

Ernest Rutherford

d)

James Chadwick

11.

Who is credited with the idea that atoms are mainly empty space, with a small positive central nucleus that contains most of the mass?

a)

John Dalton

b)

JJ Thomson

c)

Ernest Rutherford

d)

James Chadwick

12.

What does the relative atomic mass of an atom tell you?

a)

The number of protons + neutrons

b)

The number of protons

c)

The number of neutrons + electrons

d)

The number of protons + neutrons + electrons

13.

What does the atomic number of a substance tell you?

a)

The number of protons + neutrons

b)

The number of protons

c)

The number of neutrons + electrons

d)

The number of neutrons

14.

In an atom, the number of electrons is equal to ?

a)

the number of protons

b)

the number of neutrons

c)

the group number

d)

the period number

15.

What do we call elements that have the same number of protons, but different number of neutrons?

a)

isotopes

b)

atoms

c)

ions

d)

unstable

16.

What is the symbol for relative atomic mass?

a)

A_r

b)

M_r

c)

R_m

d)

M^r

17.

How do you calculate the relative atomic mass of an element?

a)

Weigh it

b)

Work out the mean relative mass of the isotopes in the element

c)

Count the number of protons and neutrons under a microscope

d)

Find the relative mass of the most common isotope

18.

Copper has two isotopes, 69% is copper-63 and 31% is copper-65. Which of the following shows how to calculate the relative atomic mass of copper?

a)

$\frac{\left(69\ \times\ 63\right)\ +\ \left(31\ \times\ 65\right)}{100}\$

b)

$\frac{\left(69\ +\ 63\right)\ +\ \left(31\ +\ 65\right)}{100}$

c)

$\frac{\left(69\ \times\ 63\right)\ \times\ \left(31\ \times\ 65\right)}{100}$

d)

$\frac{\left(69\ \times\ 63\right)\ \div\ \left(31\ \times\ 65\right)}{100}$

19.

How many protons does uranium-238 have?

a)

238

b)

92

c)

146

d)

330

20.

How many neutrons does uranium-238 have?

a)

238

b)

92

c)

146

d)

330

PHS Edexcel sC3_Atomic Structure

Total questions: 20

Worksheet time: 11mins

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