Quiz
Rates of reactions
This quiz has question types that open in the usual player.
Questions in this quiz (8)
1For a chemical [blank_start]reaction[blank_end] to take place, the particles must [blank_start]collide[blank_end] with enough energy and the right orientation to break the [blank_start]bonds[blank_end] holding them together. Then the [blank_start]particles[blank_end] can rearrange themselves into new compounds.
- Areaction
- Bcollide
- Cbonds
- Dparticles
2The rate of a reaction is the...
- ANumber of successful collisions per second
- BNumber of particles that could react
- CSize of the container the reaction is in
- DNumber of collisions that take place
3Which of these increase or decrease the rate of a reaction? (click as many as are needed - there are three factors listed in total)
- AThe temperature of the reactants
- BThe weather outside
- CThe concentration of the reactants
- DThe quality of the reactants (that you bought them from a good shop)
- EThe particle size
- FThe size of the container
4Temperature is a measure of the [blank_start]heat[blank_end] energy that the particles have. The more heat energy particles have, the [blank_start]faster[blank_end] they move. This means that [blank_start]collisions[blank_end] are more likely to have enough energy to break the [blank_start]bonds[blank_end] in the reactants, so there will be more successful collisions per [blank_start]second[blank_end].
- Aheat
- Bfaster
- Ccollisions
- Dbonds
- Esecond
5What is concentration?
- AIt's the size of the container the reaction is in
- BIt's the number of particles in a given volume or space
- CIt's the number of collisions per second
6[blank_start]Increasing[blank_end] the concentration increases the rate of the [blank_start]reaction[blank_end]. Because there are more [blank_start]particles[blank_end] in the same space, there will be more [blank_start]successful[blank_end] collisions just because they're crowded together more. Because there are more collisions, the [blank_start]rate[blank_end] of the reaction will be faster.
- AIncreasing
- Breaction
- Cparticles
- Dsuccessful
- Erate
7Which of these will react at the fastest rate?
- AVinegar and baking soda chunks
- BVinegar and a baking soda tablet
- CVinegar and baking soda powder
- DVinegar and a baking powder (baking soda mixed with citric acid) tablet
8Decreasing the particle size [blank_start]increases[blank_end] the rate of the reaction. [blank_start]Large[blank_end] chunks have a small surface area so react only slowly, because only those particles on the outside are available for [blank_start]collisions[blank_end]. Smaller pieces and powder have a [blank_start]larger[blank_end] surface area (for the same amount of reactant), and so more particles are available for collisions. Because more particles are available, there will be more [blank_start]successful[blank_end] collisions per second and therefore the rate of the [blank_start]reaction[blank_end] will increase.
- Aincreases
- BLarge, big, bigger, larger
- Ccollisions
- Dlarger, bigger
- Esuccessful
- Freaction
Information
- Description
- Year 10 Science quiz about rates of reactions with a combustion focus
- Author
- Gwyneth Cooper
- Language
- English
- Views
- 186
- Tags
- Rating
- No ratings yet Rate this quiz