CI Review (Physical Science)

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Tags

NGSS.MS-PS1-1

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

How do you determine the number of neutrons in an atom?

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is reactivity in chemistry?

Back

Reactivity refers to how readily a substance undergoes a chemical reaction with other substances.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-5

Front

Which elements are likely to have similar reactivity?

Back

Elements in the same group (column) of the periodic table typically have similar reactivity.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the components are not uniformly distributed and can be easily distinguished.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the components are uniformly distributed and cannot be easily distinguished.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Tags

NGSS.HS-PS1-1

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for their high reactivity and tendency to form positive ions.