Topic 2 : Physical & Chemical changes, mixture & solutionsrs

What type of change is the bending rail

• Chaenical Change

• Physical Change

Which of athe following is a chemical change?

• melting snow

• burning charcoal

• cutting paper

• boiling water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When something burns it is which of these?

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Dough rising is a _____

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The Law of Conservation of matter states that the total amount of matter ___ after it undergoes change.

• explodes

• disappears

• weighs less

• stays the same

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Students build a robot out of blocks. They measures the mass of the robot on a scale. One of the students accidently drops the robot, and the robot breaks into pieces.

What can the students expect to find when they measures the mass of the broken pieces?

The mass of the broken robot

• cannot be measured

• decreases

• Stay the same

• increases

Tags

NGSS.MS-PS1-2

What evidence might indicate that a chemical change has occurred?

• Release of heat

• change in temperature

• color change

• new smell

Tags

NGSS.MS-PS1-2

A combinations of two of more substances that cannot easily be separated __

• solution

• solvent

• solute

• mixture

Sugar is a _____

• solvent

• solute

Whater is the universal ______.

• solute

• solution

• solvent