Btec Applied Science Unit 3 Exam 2025 With Correct Answers

Btec Applied Science Unit 3 Exam 2025
With Correct Answers




What is a hypothesis? - correct answer An Idea that you can test using practical experiments
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What are the Key features of a good hypothesis? - correct answer A good Hypothesis must:
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Be able to be tested scientifically
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Relate one dependent variable to on independent variable
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What is a Null Hypothesis? - correct answer States that there is no relationship or causality, for example, no
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relation between the temperature and the rate of reaction.
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What does qualitative data refer to? - correct answer It refers to the appearance or value of something, such as
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the colour observed or whether the bubbles are produced.
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What does Quantitative data refer to? - correct answer It refers to numerical measurements made, such as the
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volumes and times measured. l l l




What is SOP? - correct answer The Standard Operating Procedure. This is an established procedure or method
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used to carry out a routine activity. It ensures consistent results every time.
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, What are some examples of SOPs? - correct answer Titration, Handling of chemicals, disposal of waste,
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qualitative analytical tests, preparing solutions l l l l




What are risk assessments? - correct answer It identifies hazards, evaluates the risks associated with those
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hazards and it determines ways to eliminate or control those risks.
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What is a Hazard? - correct answer When the equipment or substance can cause harm, for example a hot plate
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or hydrochloric acid
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What is a risk? - correct answer The harm that the hazard could cause and the chances of it happening, for
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example the risk of using a hot plate is getting burnt.
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What is the independent variable? - correct answer The variables you change during an investigation.
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What is the Dependent variable? - correct answer The variables you are investigating and measure during an
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investigation.



What is the control variable? - correct answer The variables you keep constant during an investigation.
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What should a method be? - correct answer A step-by-step set of instructions, Be logically ordered, allows you
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to take sensible measurements, and allows you to test your hypothesis.
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When planning your method what do you need to make sure? - correct answer That it will procedure a range of
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results, reliable results, precise results, and accurate results.
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What are some types of data? - correct answer The data can be continuous such as the age of plant ir number of
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plants. Some data can be a mixture of numbers and names such as the number of different types of plants found
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in a garden.
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What data is normally displayed on a bar chart? - correct answer Continuous data. You need to make sure its a
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smooth curve of best fit, and that the curve goes through or near most of the points.
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