Liquids

Any sample of matter has mass and takes up space. The main reason for this is because:

• All matter is heavy.

• Matter can be a gas.

• Matter is made up of tiny particles that have mass and take up space.

• The Earth is made of matter.

Water drops stay together on wax paper and they don't break apart easily. This is mainly because water molecules:

• are small

• are in motion

• are attracted to each other

• are wet

When you bring two drops of water near each other and allow them to touch, they combine immediately and become one drop. This is mainly because:

• Water molecules are made of atoms.

• Water molecules are attracted to each other.

• Water molecules are magnetic.

• Water is a liquid.

Tags

NGSS.MS-PS2-5

If you put food coloring in room temperature water, the coloring spreads throughout the water. The water causes the color to spread mainly because:

• Water molecules are warm.

• Water molecules are in motion.

• Water is more dense than food coloring.

• Food coloring molecules are small.

Tags

NGSS.MS-PS3-5

Food coloring spreads out faster in hot water than in cold water. This is mainly because:

• The water molecules in hot water move more quickly.

• The molecules in hot water are larger.

• The food coloring molecules are small.

• Hot water is less dense.

Tags

NGSS.MS-PS1-4

_____ is the study of matter.

• Zoology

• Biology

• Physics

• Chemistry

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5

When a thermometer is heated, the red liquid inside the thermometer moves up. This is mainly because:

• The red liquid is thin.

• The molecules move faster and get a little further apart.

• Hot liquid is lighter.

• The glass of the thermometer gets hot.

Tags

NGSS.MS-PS1-4

When a thermometer is cooled, the red liquid inside moves down. This is mainly because:

• Cold liquids sink.

• The glass of the thermometer gets cold.

• The molecules of the liquid move slower and get a little closer together.

• The red liquid is thick.

Tags

NGSS.MS-PS1-4

An increase in temperature increases molecular motion and increases the distance between atoms and molecules in liquids.

• true

• false

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A(n) ____ in the speed of the molecules allows the attractions between molecules to bring them a little closer together.

• increase

• decrease

Tags

NGSS.MS-PS1-4