BTEC APPLIED SCIENCE UNIT 3 WITH
VALIDATED CORRECT ANSWERS.
What is a hypothesis? - CORRECT ANSWER -An Idea that you can test using practical
experiments
What are the Key features of a good hypothesis? - CORRECT ANSWER -A good Hypothesis must:
Be able to be tested scientifically
Relate one dependent variable to on independent variable
What is a Null Hypothesis? - CORRECT ANSWER -States that there is no relationship or causality,
for example, no relation between the temperature and the rate of reaction.
What does qualitative data refer to? - CORRECT ANSWER -It refers to the appearance or value of
something, such as the colour observed or whether the bubbles are produced.
What does Quantitative data refer to? - CORRECT ANSWER -It refers to numerical
measurements made, such as the volumes and times measured.
What is SOP? - CORRECT ANSWER -The Standard Operating Procedure. This is an established
procedure or method used to carry out a routine activity. It ensures consistent results every
time.
What are some examples of SOPs? - CORRECT ANSWER -Titration, Handling of chemicals,
disposal of waste, qualitative analytical tests, preparing solutions
What are risk assessments? - CORRECT ANSWER -It identifies hazards, evaluates the risks
associated with those hazards and it determines ways to eliminate or control those risks.
,What is a Hazard? - CORRECT ANSWER -When the equipment or substance can cause harm, for
example a hot plate or hydrochloric acid
What is a risk? - CORRECT ANSWER -The harm that the hazard could cause and the chances of it
happening, for example the risk of using a hot plate is getting burnt.
What does the kinetic theory explain? - CORRECT ANSWER -It explains the properties of
different states of matter. It also explains diffusion
What is the arrangement of particles in a solid? - CORRECT ANSWER -They are close together in
a regular pattern.
What is the arrangement of particles in a liquid? - CORRECT ANSWER -They are close together in
a random pattern.
What is the arrangement of particles in a gas? - CORRECT ANSWER -They are far apart and in a
random pattern.
What are the properties of solids? - CORRECT ANSWER -They are in a fixed shape and they
cannot flow. They cant be compressed or squashed.
What are the properties of liquids? - CORRECT ANSWER -They take shape of a container, they
flow and move randomly. They cannot be compressed or squashed.
What are the properties of gases? - CORRECT ANSWER -They completely fill container and they
can flow and move randomly. They can be compressed or squased.
, Where can diffusion happen within? - CORRECT ANSWER -A mixture of liquids, a mixture of
gases, and a mixture of liquids and gases.
How do humans improve the growth of crops? - CORRECT ANSWER -They correct soil pH,
optimum watering. Correct nutrients present
How can humans have a negative effect on plant growth? - CORRECT ANSWER -Trampling.
Picking wildflowers. Removing hedges/tress.
How can humans have an effect of the distribution of plants? - CORRECT ANSWER -Sowing crops
means field with only one type of plant. Trampling can cause unusual or more widespread
distribution patterns due to seeds being carried on the bottom of shoes.
What pH doe plants grow best at - CORRECT ANSWER -Between 4.5 and 7.5
What does acidic soil mean? - CORRECT ANSWER -It can mean that there is a deficiency in
necessary minerals, such as iron and manganese.
Why is Soil Aeration necessary? - CORRECT ANSWER -It is necessary to allow sufficient oxygen to
get to the plant and for carbon dioxide to be removed.
What forms when there is little aeration? - CORRECT ANSWER -Toxins form such as hydrogen
sulfide gas.
Why is temperature important in plants? - CORRECT ANSWER -Most plants have a optimum
temperature they will grow at. The temperature is important for seed germination, seeds need
the soil to be within a specific temperature range in order for them to germinate.
VALIDATED CORRECT ANSWERS.
What is a hypothesis? - CORRECT ANSWER -An Idea that you can test using practical
experiments
What are the Key features of a good hypothesis? - CORRECT ANSWER -A good Hypothesis must:
Be able to be tested scientifically
Relate one dependent variable to on independent variable
What is a Null Hypothesis? - CORRECT ANSWER -States that there is no relationship or causality,
for example, no relation between the temperature and the rate of reaction.
What does qualitative data refer to? - CORRECT ANSWER -It refers to the appearance or value of
something, such as the colour observed or whether the bubbles are produced.
What does Quantitative data refer to? - CORRECT ANSWER -It refers to numerical
measurements made, such as the volumes and times measured.
What is SOP? - CORRECT ANSWER -The Standard Operating Procedure. This is an established
procedure or method used to carry out a routine activity. It ensures consistent results every
time.
What are some examples of SOPs? - CORRECT ANSWER -Titration, Handling of chemicals,
disposal of waste, qualitative analytical tests, preparing solutions
What are risk assessments? - CORRECT ANSWER -It identifies hazards, evaluates the risks
associated with those hazards and it determines ways to eliminate or control those risks.
,What is a Hazard? - CORRECT ANSWER -When the equipment or substance can cause harm, for
example a hot plate or hydrochloric acid
What is a risk? - CORRECT ANSWER -The harm that the hazard could cause and the chances of it
happening, for example the risk of using a hot plate is getting burnt.
What does the kinetic theory explain? - CORRECT ANSWER -It explains the properties of
different states of matter. It also explains diffusion
What is the arrangement of particles in a solid? - CORRECT ANSWER -They are close together in
a regular pattern.
What is the arrangement of particles in a liquid? - CORRECT ANSWER -They are close together in
a random pattern.
What is the arrangement of particles in a gas? - CORRECT ANSWER -They are far apart and in a
random pattern.
What are the properties of solids? - CORRECT ANSWER -They are in a fixed shape and they
cannot flow. They cant be compressed or squashed.
What are the properties of liquids? - CORRECT ANSWER -They take shape of a container, they
flow and move randomly. They cannot be compressed or squashed.
What are the properties of gases? - CORRECT ANSWER -They completely fill container and they
can flow and move randomly. They can be compressed or squased.
, Where can diffusion happen within? - CORRECT ANSWER -A mixture of liquids, a mixture of
gases, and a mixture of liquids and gases.
How do humans improve the growth of crops? - CORRECT ANSWER -They correct soil pH,
optimum watering. Correct nutrients present
How can humans have a negative effect on plant growth? - CORRECT ANSWER -Trampling.
Picking wildflowers. Removing hedges/tress.
How can humans have an effect of the distribution of plants? - CORRECT ANSWER -Sowing crops
means field with only one type of plant. Trampling can cause unusual or more widespread
distribution patterns due to seeds being carried on the bottom of shoes.
What pH doe plants grow best at - CORRECT ANSWER -Between 4.5 and 7.5
What does acidic soil mean? - CORRECT ANSWER -It can mean that there is a deficiency in
necessary minerals, such as iron and manganese.
Why is Soil Aeration necessary? - CORRECT ANSWER -It is necessary to allow sufficient oxygen to
get to the plant and for carbon dioxide to be removed.
What forms when there is little aeration? - CORRECT ANSWER -Toxins form such as hydrogen
sulfide gas.
Why is temperature important in plants? - CORRECT ANSWER -Most plants have a optimum
temperature they will grow at. The temperature is important for seed germination, seeds need
the soil to be within a specific temperature range in order for them to germinate.
