midterm exam staar released

Front

What is the role of oxygen in chemical reactions?

Back

Oxygen and oxygen-containing compounds are involved in many different reactions, often acting as a reactant that supports combustion and oxidation processes.

Front

What season occurs when the area you live in tilts away from the sun?

Back

It is winter.

Tags

NGSS.MS-ESS1-1

Front

What is a sign that a chemical reaction has occurred?

Back

A solid forms when two clear solutions are mixed.

Tags

NGSS.MS-PS1-2

Front

Why does the sun appear brighter than other stars to people on Earth?

Back

The sun is closer to Earth than any other star.

Front

What does the Hertzsprung-Russell diagram illustrate?

Back

It compares the brightness and temperature of stars, showing their characteristics.

Front

What happens during a chemical reaction?

Back

Atoms rearrange to form new substances, often resulting in observable changes like color change, gas production, or solid formation.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Define a chemical reaction.

Back

A process where reactants transform into products, involving the breaking and forming of chemical bonds.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the significance of the distance of stars from Earth?

Back

The distance affects how bright they appear; closer stars appear brighter than those farther away.

Front

What is an example of a physical change?

Back

Boiling water, where the water changes from liquid to gas but remains H2O.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What is an example of a chemical change?

Back

Rust forming on iron, which involves a chemical reaction with oxygen.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5