How Does Matter Change

Which of these could cause the particles in a substance to change states?

Check all that are true.

• adding heat energy

• dividing the substance into smaller parts

• placing the substance into a new container

• taking away heat energy

Tags

NGSS.MS-PS1-4

What happens to the particles in most liquids that lose heat energy?

• The particles speed up.

• The particles do not change their speed of movement.

• The particles slow down.

• The particles bond together.

Tags

NGSS.MS-PS1-4

Which statement is true about melting and boiling points?

• All substances have the same boiling points.

• A melting point is the same as a boiling point.

• Different substances require different amounts of heat energy to change states.

• All substances have the same melting points.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A scientist is experimenting with a solid in a laboratory. He adds heat to the solid, and he notices when the temperature reaches 232 °C, the solid begins to turn into a liquid. What did he discover?

• the boiling point of the solid

• the solid is an element

• the atom that makes up the solid

• the melting point of the solid

Tags

NGSS.MS-PS1-4

What happens to an iron atom that is divided into smaller particles?

• The particles will join together to form a molecule.

• The particles still have the same properties of iron.

• The particles do not have the same properties of iron.

• The particles will join together to form an element.

Which of these models shows a molecule?

• 
• 
• 
• all of the above

Tags

NGSS.MS-PS1-1

Amelie is experimenting with a substance in a laboratory. She divides the substance into smaller and smaller parts and finds that it is made up of only one kind of atom. What can she conclude?

• The substance is an element.

• The substance has a very low boiling point.

• The substance is not an element.

• The substance has a very high melting point.

Tags

NGSS.MS-PS1-1

Adrian’s science teacher gives him a list of different substances. Adrian is supposed to find out if the substances are elements and if they are metals or nonmetals. Where is the best place to find this information?

• in his math textbook

• on the periodic table

• in a table of boiling and melting points

• none of the above