Science Modeling Matter Chapter 1 Review

Which of the following describes the best way to smell unknown substances in the lab?

• Hold the substance as close to your nose as possible without actually touching your nose.

• Hold the substance away from your nose, wave your hand over the substance to bring the odor to your nose as you gently smell it.

• You should only smell substances in the lab under a ventilation hood.

• Dip your finger into the substance and then smell the amount that is on your finger.

When you observe matter on the nanoscale, you are looking at ______.

• very tiny things

• very big things

• things you can see without a microscope

• things you can see with a telescope

Which of the following can you see without a microsope?

• 50 gold atoms

• 5000 gold atoms

• 50 million gold atoms

• 50 million trillion gold atoms

There is more than 1 right answer.

Which of these are made of matter?

• Air

• Rocks

• Milk

• Humans

• Trees

_______ join together to form MOLECULES, and when you put many of these together, you form a substance.

• PARTICLES

• CRUMBS

• ATOMS

A __________ is made up of more than one type of molecule.

• mixture

• nanoscale

• atom

A group of two or more atoms that are joined together is called a _____.

• atom

• electron

• molecule

All matter is made up of atoms.

• True

• False

All molecules of one substance are exactly the same.

• True

• False

All molecules look exactly the same.

• True

• False