1. Motion, forces and energy

1.1 Physical quantities and measurement techniques

1.2 Motion

1.3 Mass and weight

1.4 Density

1.5.1 Effects of forces

1.5.2 Turning effect of forces

1.5.3 Centre of gravity

1.6 Momentum

1.7.1 Energy

1.7.2 Work

1.7.3 Energy resources

1.7.4 Power

1.8 Pressure

2. Thermal physics

2.1.1 States of matter

2.1.2 Particle model

2.1.3 Gases and the absolute scale of temperature

2.2.1 Thermal expansion of solids, liquids and gases

2.2.2 Specific heat capacity

2.2.3 Melting, boiling and evaporation

2.3.1 Conduction

2.3.2 Convection

2.3.3 Radiation

2.3.4 Consequences of thermal energy transfer

3. Waves

3.1 General properties of waves

3.2.1 Reflection of light

3.2.2 Refraction of light

3.2.3 Thin lenses

3.2.4 Dispersion of light

3.3 Electromagnetic spectrum

3.4 Sound

4. Electricity and magnetism

4.1 Simple phenomena of magnetism

4.2.1 Electric charge

4.2.2 Electric current

4.2.3 Electromotive force and potential difference

4.2.4 Resistance

4.2.5 Electrical energy and electrical power

4.3.1 Circuit diagrams and circuit components

4.3.2 Series and parallel circuits

4.3.3 Action and use of circuit components

4.4 Electrical safety

4.5.1 Electromagnetic induction

4.5.2 The a.c. generator

4.5.3 Magnetic effect of a current

4.5.4 Force on a current-carrying conductor

4.5.5 The d.c. motor

4.5.6 The transformer

5. Nuclear physics

5.1.1 The atom

5.1.2 The nucleus

5.2.1 Detection of radioactivity

5.2.2 The three types of nuclear emission

5.2.3 Radioactive decay

5.2.4 Half-life

5.2.5 Safety precautions

6. Space physics

6.1.1 The Earth

6.1.2 The Solar System

6.2.1 The Sun as a star

6.2.2 Stars

6.2.3 The Universe

IGCSE Physics 5.1.1 The atom Question Bank

[Maximum number: 1]

Which statement about the structure of an atom is correct?

It contains positively charged particles only.

It contains negatively charged particles only.

It contains no charged particles.

It contains positively charged particles and negatively charged particles.

[Maximum number: 1]

A scientist fires alpha-particles at a very thin sheet of gold and detects the particles that pass through.

Which statement about the results of the scattering experiment is correct?

Alpha-particles are attracted to the nucleus of the atoms in the metal sheet.

Half the mass of the atom is concentrated in the nucleus.

Most of the alpha-particles are deflected, showing that the nucleus is very dense.

Only a small number of alpha-particles are deflected, but some of these are deflected through large angles.

[Maximum number: 1]

A nuclide of strontium is represented by ${ }_{38}^{90} \mathrm{Sr}$ .
Which row gives the number and location of the electrons in an atom of ${ }_{38}^{90} \mathrm{Sr}$ ?

number of

electrons

location of electrons

in the nucleus

surrounding the nucleus

in the nucleus

surrounding the nucleus

[Maximum number: 1]

The scattering of $\alpha$ -particles by a thin metal foil supports the nuclear model of an atom. Why are $\alpha$ -particles used rather than neutrons?

because they always travel more slowly

because they are heavier

because they are larger in diameter

because they have a positive charge

[Maximum number: 1]

How are positive and negative ions formed from atoms?

positive ion

negative ion

add positive charge to the nucleus

add an electron to the atom

add positive charge to the nucleus

remove positive charge from the nucleus

remove an electron from the atom

add an electron to the atom

remove an electron from the atom

remove positive charge from the nucleus

[Maximum number: 1]

The scattering of alpha-particles from a thin gold foil produces the following observations.
- Most of the alpha-particles pass through the foil.
- Most of the alpha-particles are virtually undeflected.
- A small fraction of the alpha-particles are deflected through large angles.
- A very small fraction of the alpha-particles bounce back from the foil.

Which conclusion does not follow from these observations?

Most of the mass of the gold atom is in its nucleus.

Most of the atom is empty space.

The nucleus consists of protons and neutrons.

The nucleus must be charged.

[Maximum number: 1]

The scattering of particles by a thin gold foil provided scientists with evidence for the nuclear atom.

Which particles were scattered by the gold nuclei in the thin foil?

$\alpha$ -particles

$\beta$ -particles

neutrons

protons

[Maximum number: 1]

Which diagram shows the structure of a neutral atom?

[Maximum number: 1]

A magnesium ion has a double positive charge and a chloride ion has a single negative charge.
Which statement is correct?

A chlorine atom gains an electron to form the chloride ion.

A chlorine atom loses a proton to form the chloride ion.

A magnesium atom loses an electron to form the magnesium ion.

A magnesium atom gains two electrons to form the magnesium ion.

[Maximum number: 1]

The scattering of $\alpha$ -particles by a thin gold foil provides evidence for the nuclear model of the atom.

Two $\alpha$ -particles of the same energy are incident on a nucleus of gold.
Which diagram shows the correct paths followed by the $\alpha$ -particles as they pass close to the nucleus?

0 selected

Question 32

Question 32

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Question 33

Question 33

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Question 34

Question 34