Amplify - Chemical Reactions - Chapter 1 Flashcard

Front

What is the frequency of water testing by chemists in a city's water department?

Back

Chemists test the water supply every day.

Front

What determines if two samples are the same substance?

Back

Two samples are the same substance if they have the same atoms making them up.

Tags

NGSS.MS-PS1-1

Front

What is the boiling point?

Back

The temperature at which a substance changes from the liquid phase to the gas phase.

Tags

NGSS.MS-PS1-4

Front

Where can reddish-brown substances in water be found according to Dr. Yung's examination?

Back

The reddish-brown substance was found coming from the pipes into the houses.

Tags

NGSS.MS-PS1-2

Front

What is a false definition of 'Repeating groups of atoms'?

Back

Repeating atoms are atoms that replicate themselves.

Tags

NGSS.MS-PS1-1

Front

What is a substance made of the same group of atoms repeated over and over called?

Back

A repeating group of atoms.

Tags

NGSS.MS-PS1-1

Front

What is the freezing point?

Back

The temperature at which a substance changes from the liquid phase to the solid phase.

Tags

NGSS.MS-PS1-4

Front

What is a molecule?

Back

A molecule is a group of atoms that form specific groups that can range in size from two atoms to thousands of atoms.

Tags

NGSS.MS-PS1-1

Front

What are extended structures in solid phase?

Back

Extended structures are substances made of many atoms or groups of atoms that connect to form large structures called crystals.

Tags

NGSS.MS-PS1-1

Front

What is the difference between a substance and a mixture?

Back

A substance has a uniform and definite composition, while a mixture contains two or more substances that are not chemically combined.