Review for semester test Part 2 2024

Front

What dissolves most slowly?

Back

Large crystals in unstirred water.

Front

In which investigation is it least likely that the liquids reacted chemically?

Back

Investigation 3.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

How do you calculate average speed?

Back

Average speed = total distance / total time.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Tags

NGSS.MS-PS1-4

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What are metals?

Back

Elements that are typically shiny, good conductors of heat and electricity, and malleable.

Front

What are nonmetals?

Back

Elements that are generally poor conductors of heat and electricity and have a variety of physical properties.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What is the difference between a chemical reaction and a physical change?

Back

A chemical reaction produces new substances, while a physical change does not.

Tags

NGSS.MS-PS1-2