To press together, to force into less space.

• Thermal Expansion

• Density

• Compression

• Dissolving

The movement of particles from an area of higher concentration (more particles) to an area of lower concentration. The particles spread out.

• Dissolving

• Diffusion

• Density

• Thermal Expansion

When temperature increases (gets "hotter"), the volume of matter increases (gets bigger).

• Dissolving

• Compression

• Thermal Expansion

• Diffusion

Tags

NGSS.MS-PS1-4

When a solute (like salt) mixes with a solvent (like salt water) to make a solution (like salt water).

• Melting

• Evaporation

• Diffusion

• Dissolving

The amount of mass in a given volume. How close the particles in a substance are.

• Density

• Solubility

• Diffusion

• Dissolving

Which is not an example of a pure substance

• Atom

• Solution

• Molecules

• compound

Jack's teacher has a box of objects. He asks each student to pull out an object and identify whether it is a mixture or a pure substance. Jack pulls out a piece of iron. What is this object and why is it a mixture or a pure substance?

• A pure substance because there are several things making up the object.

• A mixture because it is only composed of one thing.

• A mixture because there are several things making up the object.

• A pure substance because it is only composed of one thing.

Tags

NGSS.MS-PS1-2

All _____ is made of tiny _____, called atoms and molecules.

• matter, particles

• matter, elements

• particles, matter

• Matter, mixtures

Tags

NGSS.MS-PS1-1

The _____, of matter are always _____.

• speed, constant

• particles, moving

• volume, consistent

• particles, faster

Tags

NGSS.MS-PS1-4

There are always _____ between the particles that make up matter.

• movement

• spaces

• speed

• temperature

Tags

NGSS.MS-PS1-4