Sxcciene thing Flashcards
1
Q
Improve reliability/accuracy?
A
Repeat
Take average
Discard anomalies
2
Q
Independent variable
A
one that you change
3
Q
Dependent variable
A
the results
4
Q
Control variable
A
ones need to keep the same to make it a fair test
5
Q
Why is it important to keep control variables the same?
A
So only independent variabbles are allowed to affect the dependent variable and do not change the results
6
Q
Why line graph
A
independent and dependent variables are continuos
7
Q
Why bar chart
A
independent variable is categoric
8
Q
Reproducible
A
different method used and proves same hypothesis
9
Q
Graph looking
A
gradient, steep shallow horizontal, non-linear relationship
10
Q
in rate of reaction what could cause anomalous results and how can they be reduced/prevented?
A
- loss of gas, use different apparatus(put Mg in immediately)
- plunger sticks, turn regularly
- changes in temp, water bath to monitor it
- Mg size strip, weigh to check mass
