chemical reaction speed

• Natuurkunde / Scheikunde
• Middelbare school
• vwo
• Leerjaar 2

Chemical reactions and equations

learning goal today

Know all 4 factors that will influence the rate of a chemical reaction.

Types of substance

model of an atom.

biljons and biljons times enlarged. 

an atom has a nucleus with protons and neutrons

Neutrally charged atom

As many protons as electrons 

Law of Lavoisier

3 grams of hydrogen reacts with 

24 grams of oxygen and becomes

27 grams of water.

3g + 24g = 27 g

Let's count the mass

energy effect

Exothermic reactions transfer energy to the surroundings 

the temperature of the surroundings increases. 

Endothermic reactions take in energy 

the temperature of the surroundings decreases.

Reaction temperature (or activation temperature) is the minimum temperature for a chemical reaction.
 

What always happen in a chemical reaction?

1. there will be smoke
2. properties of substance(s) change
3. Mass will increase
4. there will be light

summary

Rate of a chemical reaction depend on:

• the amount of collisions
• the energy of those collisions

surface area

amount of collisions

energy of collisions

temperature

concentration

catalyst

and now...

watch video 2 and 3 

do A1, B12, C15 and C17

Ask questions, please!

try to be ready on Wednesday.