(Matthew's) 8C4 - Chemical Reactions Flashcards
1
Q
Name 4 ways to tell if there is a reaction.
A
Colour change
Gas being produced
Temperature change
New substance formed
2
Q
What is the word equation for Iron Sulphide?
A
Iron + Sulphur –> Iron Sulphide
3
Q
What is a dependant variable?
A
What you are measuring.
4
Q
What is a independent variable?
A
A variable that you change.
5
Q
What is a control variable?
A
A variable that you keep the same.
6
Q
Why does mass change during a chemical reaction?
A
Gas is released which is less dense, therefore making it lighter and the mass is less.
7
Q
How can you test for Carbon Dioxide?
A
If the liquid goes misty and bubbles produced.
