Yr7 Module Test 3 Diet, Respiration, Energy, Cells, Particles and
Forces, Acids and Alkalis
Q1
Match the following words to the meanings:
Something that can change the
way an object moves
Something used to measure
forces
The units of Force
Newton
Newton meter
Gravity
A force caused by things
rubbing together
A force that acts between the
Earth and all objects.
Force
Friction
(5)
Q2
Draw lines with a ruler to match the test and result to each of the following food
types:
Food type
Starch
Sugar
Protein
Fat
Test
Benedicts
Iodine
Ethanol + Water
Biuret
Q3 Label the human digestive system.
Q4 a) 1Kg on Earth has a weight of _____ Newtons.
Result
Brown to blue black
Cloudy white emulsion
Pale blue to Brick red
Pale blue to purple
(4)
b) The Kilogram is a unit of ______
(2)
Q5 Using particles of the size shown, show the arrangement of particles in a solid, liquid
and gas.
Solid
Liquid
Gas
(3)
Q5 Explain why:
a) Solids are hard to compress ________________________________
b) Liquids can flow _________________________________________
c) Gases are easy to compress ________________________________
(3)
Q6 Match the following terms to their definitions:
Solute Solution
Saturated
Solvent
Solubility
Soluble
A solution in which no more solute can dissolve
How much solute will dissolve in 100g of solvent
If a substance dissolves in a solvent, it is ……..
The substance that dissolves in the solvent
this is formed when a solute dissolves solvent
the liquid in which the solute dissolves
(6)
Q7 Adding salt to water will ________ its boiling point and ________ it’s melting point.
(2)
Q8 Complete the law of energy conservation:
Energy ____________ be created or destroyed only ____________ into other forms.
(2)
Useful
Q9. Complete this energy transfer diagram.
Petrol Powered Car
driving at night!
Waste
Q10. Label this diagram of a plant cell using the words at the side
(4)
(3)
Q11. What is the job/function of:
a) cell membrane ___________________________________________
chloroplast ______________________________________________
(2)
b) Write the names of two parts of a plant cell that are NOT found in an animal cell
________________
________________
(1)
Q12
a)What does this hazard symbol mean?
_________________
b) Which of these acids is most likely to be dangerous?
citric acid
carbonic acid
hydrochloric acid
c) Which statement about alkalis is true?
they are all bases
they cannot neutralise acids
they are all insoluble
d) Universal indicator solution is usually green to begin with. What does this mean?
it is acidic
it is alkaline
it is neutral
e) A liquid has a pH of 7.5 - what does this mean?
it is weakly acidic
it is weakly alkaline
it is neutral
f) A liquid has a pH of 1 - what does this mean?
it must be sodium hydroxide solution
it is strongly acidic
it is weakly acidic
g) Farmers use lime to neutralise their soils. What sort of substance is lime?
a base
an acid
a sharp tasting drink
(7)
Q13
On lined paper: Explain, in a minimum of two paragraphs each containing at least two
sentences ; how you would compare the processes of combustion and respiration. (6)