Aims
My class wants to test how fast sugar dissolves. They change the temperature of the water (cold, warm, and hot). They use a stopwatch to measure the time taken for the sugar to fully dissolve in each cup.
To find out how the temperature of water affects the time taken for sugar to dissolve.
Calculate this as a percentage:
50/100
50%
Callum drops a piece of chalk into four different beakers. Each beaker has a different concentration of acid (weak, medium, strong, and extra strong). He measures the volume of gas collected in 1 minute for each beaker using a measuring cylinder.
To investigate how the concentration of acid affects the volume of gas produced.
Calculate the following as a percentage:
a) 34/89
b) 55/78
c) 102/150
a) 38%
b) 70.5% or 71%
c) 68%
Eilidh lights a Bunsen burner to heat salt water in an evaporating basin. She uses a thermometer to set different heating temperatures. She measures the time it takes for all the water to evaporate and leave dry salt behind.
To find out how the temperature affects the time taken for water to evaporate.
Calculate this as a percentage...
3.1/5.1
Possible Answers:
60.78%
60.8%
61%
Isla uses filter paper and water to separate the different colored inks in four different black felt tip pens. She allows the water to run up the paper and measures the number of colored dyes that separate from each ink sample.
To find out if the type of black pen affects the number of coloured dyes it contains.
Louisa got 44 out of 65 in a maths test, calculate her score as a percentage.
Answer:
67.69%
67.7%
68%
"I water my house plants every day. I think this will make them grow faster…"
"Hmmm, I think that would be too much…
They don’t need that much water.."
To investigate how often watering the plants affects how fast they grow.
Ella got 75% on her math test. The test was out of 16, what was her score
12