Rate of Chemical Reactions Review

Molecules are always...

• In Motion

• Silent

• Still

• Water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What needs to happen in order for a chemical reaction to take place?

• Particles must be solid

• Particles must stay still

• Particles must collide with each other

• Combustion must take place

When we increase the number of particle collisions... we increase the _______________ of reactions

• Rate (Speed)

• Type

• Magnitiude

• Number

Tags

NGSS.HS-PS1-5

In order to burn a tree log faster, we must...

• Take away the oxygen

• Increase the surface area (chop it up)

• Put water on it

• Decrease the temperature

Tags

NGSS.MS-PS3-4

Increasing the surface area of the tree log allows for...

• More collisions between the flame and wood particles

• Less collisions between reactants

• a Slower reaction rate

• a Smaller fire

Tags

NGSS.MS-PS3-4

When you increase the temperature, particles move around more...

• Quickly

• Slowly

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Concentrated solutions contain _____________ atoms that dilute solutions

• More

• Less

This is a substance that increases the rate of a chemical reaction without being consumed by the reaction.

• A thermometer

• A match

• A catalyst

• A substrate

Tags

NGSS.HS-PS1-5

When we chew our food, we are helping speed up the digestion reaction because we are...

• Increasing the temperature

• Increasing the concentration

• Increasing the number of particles

• Increasing the surface area