Module 12 Particle model of matter

In which state of matter are particles moving the slowest?

• solid

• liquid

• gas

Tags

NGSS.MS-PS1-4

Gas particles have strong forces of attraction between them.

• true

• false

Particles of a (a)   vibrate in a fixed position.

Matter is described as anything that has _____ and takes up _____.

(a)  

When particles are heated, they begin to move ...

• slower

• faster

• the same speed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Give one word/term for the process which describes particles moving from a region of high concentration to a region of low concentration? (a)  

Thabo wishes to investigate whether sugar will dissolve faster in hot water or in cold water. He adds 1 teaspoon of sugar in a 250 ml glass of cold tap water and 1 teaspoon of sugar in a 250 ml glass of boiling water from the kettle. He stirs both glasses the same way and observes the solutions after 1 minute.

A possible hypothesis for his experiment would be...

• The aim of this experiment is to determine whether temperature affects the rate at which sugar will dissolve in water.

• Will sugar dissolve faster in cold water or hot water?

• Sugar will dissolve faster in hot water.

• Sugar dissolves faster in water if you stir the solution.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS1-2

Thabo wishes to investigate whether sugar will dissolve faster in hot water or in cold water. He adds 1 teaspoon of sugar in a 250 ml glass of cold tap water and 1 teaspoon of sugar in a 250 ml glass of boiling water from the kettle. He stirs both glasses the same way and observes the solutions after 1 minute.

What is the independent variable?

• The amount of sugar

• The stirring method

• The rate at which sugar dissolves in water

• The temperature of the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Particles of a (a)   vibrate in a fixed position.