What are the physical properties of a substance?

Properties that you can observe or measure without changing a material

Condensation is the change of state of substance from gas to liquid.

A substance can condense at any temperature below its boiling point

The tiny pieces of matter that everything is made from

Which of these explains why hot molten (liquid) iron can flow?

The particles in molten iron move around randomly, sliding over each other

Select the correct definition of solute

The substance that dissolves in a solvent to make a solution

An element on the right of the stepped line of the periodic table

Which sentence about particles is correct?

All the particles in a substance are the same as each other

Select the correct sentence about freezing

The particles are then in a regular pattern and can then vibrate only

Which of these is a physical property of a gas substance?

Flows and takes the shape of the whole of its container

Select the correct definition of mass number

The total number of protons and neutrons in an atom

What is the correct definition of melting point?

The temperature at which a substance changes from solid to liquid state

What elements are present in the compound sodium chlorate?

Sodium, chlorine, and oxygen only

Select the correct definition of compound

Material containing 2 or more types of atoms strongly joined together

Select the correct definition of isotopes

Atoms of the same element that have different numbers of neutrons

Which of these properties of a gas explains why hydrogen can be easily compressed and stored in a cylinder?

The particles in hydrogen are far apart and can be pushed closer together

A space that has no particles, and so no matter

Select the correct definition of nucleus

The central part of an atom, made up of protons and neutrons

Select the correct definition of molecule

A particle made up of 2 or more atoms strongly joined together

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Chemistry Review Y7

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Review for the Chemistry Topics 'The particle model', 'Elements, compounds and mixtures' and 'Inside atoms'

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Questions 23

Answers

1
What are the physical properties of a substance?
Properties that describe how acidic or alkaline a substance is
Properties that you can observe or measure without changing a material
Properties of a substance that describe what it is like and what it does
Properties that describe how substances change in chemical reactions
2
Condensation is the change of state of substance from gas to liquid.
A substance can condense at any temperature above its boiling point
A substance can condense at any temperature below its boiling point
3
What is a particle?
The different types of matter that things are made from
The tiny pieces of matter that everything is made from
A material that has one type of matter
Describes what a substance is like and what it does
4
Which of these explains why hot molten (liquid) iron can flow?
The particles in molten iron are far apart and can move freely
The particles in molten iron move around randomly, sliding over each other
The particles in molten iron are held together very weakly
The particles in molten iron vibrate on the spot
5
Select the correct definition of solute
The ability of a substance to dissolve in a solvent
The liquid in which a substance is dissolved
A mixture that forms when a substance dissolves in a liquid
The substance that dissolves in a solvent to make a solution
6
What is a non-metal?
An element on the right of the stepped line of the periodic table
An element on the left of the stepped line of the periodic table
A compound made when a metal ion replaces the hydrogen ion in an acid
7
Which sentence about particles is correct?
All the particles in a material are the same as each other
All the particles in a substance are the same as each other
All the particles in a mixture are the same as each other
8
Select the correct sentence about freezing
The particles are then in a regular pattern and can then vibrate only
When a substance freezes, its particles vibrate faster
Freezing is the change of state from gas to liquid
9
Neon is a gas that glows when electricity passes through it, it is often used in
Jewellery
Balloons
Advertising signs
10
Which of these is a physical property of a gas substance?
Flows and takes the shape of the whole of its container
Shape stays the same unless you apply a force
Flows and takes the shape of the bottom if its container
Does not flow
11
Select the correct definition of mass number
The difference between the number of protons and electrons in an atom
The total number of protons and neutrons in an atom
The total number of protons, neutrons and electrons in an atom
The number of protons in an atom of an element
12
What is the correct definition of melting point?
The temperature at which a substance changes from liquid to gas state
The change of state from solid to liquid
The change of state from gas to liquid
The temperature at which a substance changes from solid to liquid state
13
What elements are present in the compound sodium chlorate?
Sodium, chlorine, and oxygen only
Sodium, calcium, and chlorine only
Sodium and chlorine only
Sodium, chlorine, oxygen, and carbon only
14
Melting is the change of state from
liquid to gas
gas to liquid
solid to liquid
solid to gas
15
Select the correct definition of compound
Material containing 2 or more types of atoms strongly joined together
Contains 2 or more substances that are not joined together
The smallest part of a substance that can exist
Substance made of 1 type of atom that cannot be split into other substances
16
What is the name of the compound that contains the non-metal element chlorine and the metal element lithium?
Lithium chloride
Lithium-chlorine
Chlorine-lithium
Chlorine lithide
17
Select the correct definition of isotopes
Atoms of the same element that have different numbers of neutrons
The smallest part of an element that can exist
Electrons outside and protons and neutrons in the nucleus of an atom
Protons and neutrons
18
Which of these properties of a gas explains why hydrogen can be easily compressed and stored in a cylinder?
The particles in hydrogen can slide over each other
The particles in hydrogen are far apart and can be pushed closer together
The particles in hydrogen can get smaller when compressed
The particles in hydrogen can be squeezed into the same space and overlap
19
What is the vacuum?
A space that has no particles, and so no matter
A substance that can exist as a solid, liquid, or gas
The particles that make up an atom
A particle made up of two or more atoms, strongly joined together
20
How many elements are there in potassium iodide?
2
3
1
4
21
Which of these is a physical property of a liquid substance?
The substance flows
The particles in the substance can slide past each other
The substance takes the shape of the whole container
The substance can be compressed
22
Select the correct definition of nucleus
The arrangement of electrons in an atom
The central part of an atom, made up of protons and neutrons
A material that has one type of matter
Also called the atomic number
23
Select the correct definition of molecule
The smallest part of an element that can exist
Substance made of 1 type of atom that cannot be split into other substances
Particle with + or - charge formed when an atom loses or gains electrons
A particle made up of 2 or more atoms strongly joined together

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