Matter and Atoms Review

How does the density of a 4-g sample of copper compare to that of a 12-g sample of copper?

• Its density is one-half the density of the 12-g sample.

• Its density is the same density as the 12-g sample.

• Its density is twice the density of the 12-g sample.

• Its density is three times the density of the 12-g sample.

What is the smallest particle of an element?

• atoms

• electrons

• protons

• nucleus

Which describes a property of all elements?

• All elements are metals.

• All elements have six electrons.

• All elements are pure substances.

• All elements exist in the solid phase.

Which best describes the center of an atom?

• atomic mass

• electrons

• protons

• nucleus

When ice melts, it becomes a

• gas

• solid

• liquid

• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram below compares the movement of water particles when the water is cold compared to when it is hot.

• The particles in the cold water move more slowly.

• The particles in the cold water move more quickly.

• The particles in the cold water move more freely.

• The particles in the cold water do not move at all.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which is a phase change of matter that can always occur without a substance changing its identity?

• dissolving

• freezing

• reacting

• rusting

Tags

NGSS.MS-PS1-4

Appearance, texture, and density are classified as

• physical properties

• chemical properties

• magnetic properties

• thermal properties

The boiling point of water in degrees Celsius is

• 0°C

• 32°C

• 100°C

• 212°C

Tags

NGSS.MS-PS1-4

The image shows two processes. Which statement BEST compares the processes?

• They both form a new atom.

• They both form a new molecule.

• Process 1 forms a new molecule, and Process 2 forms a new atom.

• Process 1 forms a new atom, and Process 2 forms a new molecule.

Tags

NGSS.MS-PS1-1