STAAR SCIENCE 8TH REVIEW

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Tags

NGSS.MS-PS2-1

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into different substances with different properties.

Tags

NGSS.MS-PS1-2

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Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as it changes from solid to liquid without altering its chemical composition.

Tags

NGSS.MS-PS1-4

Front

What is the difference between metals and nonmetals?

Back

Metals are typically malleable, ductile, and good conductors of heat and electricity, while nonmetals are not.

Front

What is the significance of the mass number?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Tags

NGSS.MS-PS1-1

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NGSS.MS-PS1-5

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Tags

NGSS.MS-PS1-5

Front

What is an example of a chemical property?

Back

Flammability is an example of a chemical property, as it describes how a substance reacts with fire.