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WorksheetsPHYSMAS QUIZ 9
Total questions: 10
Worksheet time: 6mins
Pressure =
Force x area
Area / force
Force / area
Mass / area
If we heat up a bottle of air, what happens?
(choose more than one answer)
The molecules move faster
The volume decreases
The pressure increases
The number of collisions with the walls stays the same
The pressure stays the same
These work because because they cause a...
(choose more than one answer)
low area
low force
high area
high pressure
low pressure
Which variable goes where?
independent variable (what the scientist decides) on the Y axis
dependent variable on the X axis
control variables on both axes
independent variable on X axis, control variable on the Y axis
dependent variable on the Y axis, independent variable on the X axis
When you add bicarbonate to vinegar...
(choose more than one answer)
oxygen is released
it is a chemical reaction
carbon dioxide is released
the acid vinegar is neutralised
it is a physical change
Red cabbage indicator...
(choose more than one answer)
Turns blue/green with acids
Turns blue/green with alkalis
Turns pink/red with acids
Turns pink/red with alkalis
Turns yellow in neutral conditions
When iron oxidises in air, the word equation is:
Iron + oxide → oxygen ironide
Fe + O2 → FeO
Oxygen + Iron → iron oxide
Iron + water → Iron hydroxide
Copper Sulphate:
CoS
CoSO4
CSO4
CuS
CuSO4
Which 2 equations are balanced?
2Fe + O2 --> Fe2O3
CaCO3 --> CaO + CO2
2Na + O2 --> 2NaO
Mg + HCl --> MgCl2 + H2
When two elements react to form a new compound...
The 2 elements mix together
The metal atoms join with the metal atoms
The atoms of different elements join together in new ways
A new element is formed, by a chemical reaction
