Reversible and Irreversible Changes

Which of the following solids will dissolve in water?

• salt

• sand

• soil

• chalk

Tags

NGSS.MS-PS1-2

Solid that dissolve in water is called ....

• reversible

• irreversible

• soluble

• insoluble

Tags

NGSS.MS-PS1-2

Which picture shows a solution?

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We know that the salt dissolve in water because ...

• we can see the salt in water after mixing

• the salt seems to disappear in water

• we can take the salt back by sieving

• there is a new substance produced

Tags

NGSS.MS-PS1-4

Irreversible changes shown by pictures...

(choose 2 correct answers)

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The mixture that can be separated by sieving is ...

(choose two correct answers)

• salt and water

• tea leaves and water

• sugar and water

• flour and sugar

To separate salt from water in salt solution we need to ...

(choose 2 correct answers)

• use a sieve

• use a filter paper

• evaporate the water

• heat the solution

Tags

NGSS.MS-PS1-4

Reversible changes is shown by picture ....

(choose 2 correct answers)

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• 
• 

Tags

NGSS.MS-PS1-2

Pictures of insoluble solids are ...

(choose 2 correct answers)

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Tags

NGSS.MS-PS1-2

Study this picture.

This mixing is irreversible Change because ...

• there is a new substance produced

• the bicarbonate soda can't dissolve

• the vinegar can't dissolve

• vinegar and soda give no reaction

Tags

NGSS.MS-PS1-2