Year 9 Science Homework Week 1 - Naomi Arthur | Biblioteka

1

State the name given to the temperature at which a substance turns from a liquid into a gas.

boiling point

melting point

freezing point

evaporation

1

State the name given to the temperature at which a substance turns from a solid into a liquid.

evaporation

melting point

freezing point

boiling point

1

In which state of matter are the particles in a regular arrangement?

Solids

Liquids

Gases

1

Which two states of matter cannot be compressed?

Solids and gas

Liquids and solids

Gases and liquids

1

What will cause particles to gain more energy?

Increase in temperature

Decrease in temperature

No change in temperature

1

Name the state of matter where particles are far apart from each other

Solid

liquid

gas

1

Name the state of matter where particles are able to slide past each other

Solid

liquid

gas

1

The smallest piece of an element is an…

Molecule

particle

atom

1

What is a horizontal row on the periodic table called?

Column

Group

Period

1

What is a group on the periodic table?

Horizontal row

Vertical column

Colour block

1

What is a solution?

A mixture made when one substance is dissolved into another

A compound made when one substance is dissolved into another

A mixture made when one substance is reacted with another

1

What does insoluble mean?

A substance that will dissolve into another

A substance that will react with another

A substance that will not dissolve into another

1

What is a formulation?

A compound that has been designed as a useful product always made with the same proportions of the same substances

A mixture that has not been designed as a useful product always made with the same proportions of the same substances.

A mixture that has been designed as a useful product always made with the same proportions of the same substances

1

How would the melting point of saltwater be different from the melting point of pure water?

Pure water would melt over a range of temperatures while saltwater melts at a fixed temperature, 0 °C

Saltwater would melt over a range of temperatures while pure water melts at a fixed temperature, 0 °C.

Saltwater would melt at a fixed temperature, 0 °C while pure water melts over a range of temperatures

1

What is a molecule?

Two or more atoms are chemically joined

One atom chemically joined

Two or more elements chemically joined

1

How many oxygen atoms are there in O3?

1

2

3

5

1

What is a compound?

two or more atoms chemically joined together

two or more different elements chemically joined together

Two or more molecules chemically joined together

1

What is a pure substance?

A substance that consists of a mixture of elements

A substance that consists of a mixture of atoms

A substance that consists of only one element or compound