Humus is
- a soft black substance made from dead plants and animals found in the soil
- a Greek foodstuff
- made from rocks being broken down
- the result of transport
Acids turn universal indicator paper
- red/orange
- green
- purple
- blue
Neutral pH is number
- 7
- 1
- 14
- 8
Alkalis turn universal indicator paper
- purple/ blue
- green
- red
- yellow
In order to neutralise an acidic soil farmers add
- lime
- lemon
- acids
- sand
We measure how acid or alkaline soils are using the
- pH scale
- acidity scale
- alkalinity scale
- colour scale
Which of the following is not a property of Loam soils
- easily waterlogged
- mixture of sandy and clay soils
- easy to dig
- hold water well without getting waterlogged
Which of the farmers fields will drain the best?
- Sandy soil with relatively large rock fragments
- Mainly clay soil with few rock fragments
- Clay soil with some fossils
- Sandy soil with plenty of humus
A compound is
- two or more different types of atoms chemically joined
- atoms of only one type
- more than one type of atom not chemically joined
- one type of atom bonded together in lumps
Changing from a liquid to a gas is called
- evaporation
- condensation
- sublimation
- melting
Changing from a solid to a gas directly is called
- sublimation
- evaporation
- condensation
- melting
Changing from a gas to a solid directly is called
- deposition
- evaporation
- condensation
- melting
Changing from a gas to a liquid is called
- Condensation
- evaporation
- melting
- sublimation
Changing form a liquid to a solid is called
- freezing
- condensation
- melting
- evaporation
The melting and boiling points for a given substance
- are constant
- change all the time
- are impossible to predict
- vary depending on several factors
Adding salt to water
- Lowers the melting point and increases the boiling point
- Lowers the boiling point and raises the melting point
- Lowers the boiling and melting points by the same amount
- Has no effect on the melting and boiling points
Which of the following is not a state of matter
- Water
- Liquid
- Solid
- Gas
Which of the following descriptions applies to a liquid
- Particles quite close together, random arrangement, free to move around
- Particles tightly packed together, regularly arranged, not free to move
- Particles arranged very randomly, very spaced out, free to move
- Particles arranged in regular pattern, spaced out, free to move around
Which of the following descriptions applies to a solid
- Particles tightly packed together, regularly arranged, not free to move
- Particles quite close together, random arrangement, free to move around
- Particles arranged very randomly, very spaced out, free to move
- Particles arranged in regular pattern, spaced out, free to move around
Which of the following descriptions applies to a gas
- Particles arranged very randomly, very spaced out, free to move
- Particles quite close together, random arrangement, free to move around
- Particles tightly packed together, regularly arranged, not free to move
- Particles arranged in regular pattern, spaced out, free to move around
After filtering you are left with two parts, filtrate and residue. The residue is
- The solid remaining on the filter paper
- the solid that comes through the filter paper
- the liquid that has come through the filter paper
- The liquid left on the filter paper
Which of these will not reduce the amount of acid rain?
- Reduce research into alternative fuels
- Remove the sulphur from fossil fuels before we use them
- Use catalytic converters
- Plant more trees
Which of the following gases is not responsible for global warming?
- Carbon Monoxide
- Carbon Dioxide
- Water vapour
- Methane
Another environmental problem is the hole in the ozone layer. This has been caused by
- CFCs
- global warming
- carbon dioxide
- methane
The tiny droplets in aerosols move around the room by
- diffusion
- wafting
- shaking the can in the air
- conduction
If we heat calcium carbonate strongly what gas is given off?
- Carbon dioxide
- carbon monoxide
- oxygen
- hydrogen
Breaking substances down using heat is called
- thermal decomposition
- thermal cracking
- thermal separation
- heat splitting
Which of the following list is not one of the four rock tests
- Taste test
- what does it look like?
- scratch test
- porosity test
We can test for carbon dioxide by
- bubbling through limewater
- dissolving it in water
- testing with a lit splint
- testing with a glowing splint
Global warming is a result of
- the greenhouse effect
- the hole in the ozone layer
- large amounts of glass being used on Earth
- CFCs