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Year 9 Science Homework Week 1
By Naomi Arthur
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Last updated over 4 years ago
18 questions
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Question 1
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Question 9
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Question 18
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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
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
In which state of matter are the particles in a regular arrangement?
Solids
Liquids
Gases
Which two states of matter cannot be compressed?
Solids and gas
Liquids and solids
Gases and liquids
What will cause particles to gain more energy?
Increase in temperature
Decrease in temperature
No change in temperature
Name the state of matter where particles are far apart from each other
Solid
liquid
gas
Name the state of matter where particles are able to slide past each other
Solid
liquid
gas
The smallest piece of an element is an…
Molecule
particle
atom
What is a horizontal row on the periodic table called?
Column
Group
Period
What is a group on the periodic table?
Horizontal row
Vertical column
Colour block
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
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
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
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
What is a molecule?
Two or more atoms are chemically joined
One atom chemically joined
Two or more elements chemically joined
How many oxygen atoms are there in O3?
1
2
3
5
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
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