Matter and Their Interaction Review

What does the 6 represent?

• atomic mass

• atomic number

• element name

• chemical symbol

What does 12.011 represent?

• atomic mass

• atomic number

• element name

• chemical symbol

Tags

NGSS.MS-PS1-1

The Modern Periodic Table of Elements is arranged by

• atomic mass

• atomic number

• valence electrons

• number of isotopes

Which group of the periodic table is composed of inert (non reactive) gases?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

True or False: The reactivity of metals tends to decrease as you move from left to right across the periodic table.

• True

• False

What best describes what happens when an ice cube melts?

• Molecules move faster

• Molecules move slower

• Molecules increase in density.

• Molecules condense into the air.

Tags

NGSS.MS-PS1-4

Melting wax. Is this change physical or chemical?

• It is a physical change.

• It is a chemical change.

Tags

NGSS.MS-PS1-4

Rusting iron. Is this change physical or chemical?

• It is a physical change.

• It is a chemical change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Dissolving powder. Is this change physical or chemical?

• It is a physical change.

• It is a chemical change.

Shredding paper. Is this change physical or chemical?

• It is a physical change.

• It is a chemical change.