Amplify Chapter 7 Unit 1 Review

What makes up all substances?

• Molecules

• Atoms

• Repeating Groups of Atoms

Choose the word that means 'the relative size of things.'

• scale

• model

• property

• molecule

Which word means an object, diagram, or computer program that helps us understand something by making it simpler or easier to see?

• model

• scale

• property

• molecule

Check off the word that means "a group of atoms joined together in a particular way"

• scale

• property

• molecule

• model

Which word means something that can be observed about a substance, such as color, smell, or boiling point?

• scale

• molecule

• model

• property

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

• boiling point

• melting point

• liquid point

• condensation point

Where did Dr. Yung (the chemist near Westfield) find the reddish-brown substance when she examined all the possible sources?

• coming from the pipes into the houses

• in the wells where the water comes from

• in the ponds nearby the town

• in all water everywhere in Westfield

Why do different substances have different properties?

• They are made of different groups of atoms.

• They look different.

• The same atoms can change their properties when needed.

• There are different numbers of the repeating atom groups.

How often do chemists from a city's water department test the water supply?

• every hour

• every day

• every week

• every month

• every year

When examining the following evidence, which is the best evidence we should use?

• ugly color, solid

• white, small pieces

• white, small, grainy, crystals