Rate of reaction Flashcards
1
Q
What is ALWAYS formed in a chemical reaction?
A
New substances
2
Q
What is the Rate of Reaction?
A
The speed at which the reactants are turned into products
3
Q
How can we control rates fo reaction?
A
By altering the variables
4
Q
How can rates vary?
A
Slow = rusting of iron Instantaneous = explosions
5
Q
How can we monitor the rate?
A
By measuring changes on the mass or volume od reactants and products
OR
Measuring the volume of hydrogen produced
6
Q
What is an interdependent variable?
A
The thing that changes
7
Q
What is a dependent variable?
A
The thing that is measured
8
Q
What equipment is used for measuring the volume of gas?
A
- delivery tube
- gas syringe
- flask
- magnesium (granules)
- dilute sulphuric acid
9
Q
What is the equation for magnesium and dilute sulphuric
A
Mg + H²So⁴ —> MgSo⁴ + H²
10
Q
What equipment is used for measuring the decrease of mass (change in mass)?
A
- Cotton wool to keep acid “spray” from escaping
- Scale
- Dilute hydrochloric acid
- Marble chips
