LATEST ACTUAL EXAM 2026
What does qualitative data refer to? - 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? - ANSWER --It refers to numerical measurements
made, such as the volumes and times measured.
What is a hypothesis? - ANSWER --An Idea that you can test using practical experiments
What are the Key features of a good hypothesis? - ANSWER --A good Hypothesis must:
Be able to be tested scientifically
Relate one dependent variable to on independent variable
What is a Null Hypothesis? - ANSWER --States that there is no relationship or causality, for
example, no relation between the temperature and the rate of reaction.
What is SOP? - 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? - ANSWER --Titration, Handling of chemicals, disposal
of waste, qualitative analytical tests, preparing solutions
What are risk assessments? - ANSWER --It identifies hazards, evaluates the risks
associated with those hazards and it determines ways to eliminate or control those risks.
What are some types of data? - ANSWER --The data can be continuous such as the age of
plant ir number of plants. Some data can be a mixture of numbers and names such as the
number of different types of plants found in a garden.
What data is normally displayed on a bar chart? - ANSWER --Continuous data. You need
to make sure its a smooth curve of best fit, and that the curve goes through or near most of the
points.
What are bar charts used for? - ANSWER --They are used for discrete data but can be
used to compare different sets of data.
What is the Pattern on the graph? - ANSWER --The shape of the graph. It is the line that
goes up as time goes by but eventually levels off
What is the trend on a graph? - ANSWER --The relationship between factors on the graph
or in the table. The full trend is that the volume increases as the time increases but then levels
off after a certain amount of time.
What is the sample size? - ANSWER --The number of people sampled in the investigation.
To be confident in your conclusions you need a large sample size to give strong evidence.
, What is Primary data? - ANSWER --This is the data that you have gathered for yourself
through the experiments or investigations .
What is secondary data? - ANSWER --The data that you get in books, scientific papers or
the internet. You should compare your primary and secondary data to draw a conclusion
How do you know if the data is anomalous? - ANSWER --It doesn't fit into the pattern of
the other results. It does not lie close to the line of best fit.
What can cause the anomalous data? - ANSWER --Not following the method correctly.
inaccurate measuring/recording and impurities.
What is systemic error? - ANSWER --The error that is built into the method or equipment
which you are using. This can be corrected by calibrating the balance. These errors are
quantitative.
What is a Hazard? - ANSWER --When the equipment or substance can cause harm, for
example a hot plate or hydrochloric acid
What is a risk? - 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 is the independent variable? - ANSWER --The variables you change during an
investigation.
What is the Dependent variable? - ANSWER --The variables you are investigating and
measure during an investigation.