Collision Theory

A chemical change that occurs when two or more substances combine to form a

new substance.

• Activation Energy

• Chemical Kinetics

• Chemical Reaction

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The measure of the change in the concentration of the reactants or products.

• Activation Energy

• Activation Rate

• Chemical Reaction

• Concentration

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The substance or particles that enter into and are altered in the course of a chemical reaction.

• Catalyst

• Enzyme

• Product

• Reactant

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The number of particles present in a given volume of solution.

• Catalyst

• Concentration

• Product

• Temperature

Tags

NGSS.HS-PS1-5

The measure of how fast or slow a reaction happens.

• Activation Energy

• Collision theory

• Particle Size

• Rate of Reaction

Tags

NGSS.HS-PS1-5

A condition that needs to be met for a chemical reaction to occur.

• The substance must be homogeneous.

• The temperature should be kept constant.

• Particles should maintain a certain distance from each other.

• Particles in the substance must collide and have enough energy.

Tags

NGSS.HS-PS1-5

The factor that would NOT affect the rate of a chemical reaction.

• Concentration

• Humidity

• Particle Size

• Temperature

Tags

NGSS.HS-PS1-5

The factor that will slow down the rate of a chemical reaction.

• Manual stirring of the substance.

• Placing substance in a hot water.

• Placing products in iced water.

• Placing reactants in an ice bath.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The factor that does NOT show evidence of chemical reaction.

• Absorption of heat

• Change of color

• Change of size

• Liberation of heat

Tags

NGSS.MS-PS1-2

The measure of the hotness or coldness of a substance.

• Energy

• Humidity

• Temperature

• Thermometer

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4