Front

What is a small particle that is known as the basic building block of matter?

Back

atom

Front

Two oxygen atoms bond together, which vocabulary word best describes this type of matter?

Back

molecule

Front

H₂O is most accurately described as a ___________________.

Back

compound

Front

Which of the following is the most accurate statement?

• everything is both a molecule and a compound
• nothing can be both a molecule and a compound
• all compounds are also molecules
• All molecules are also compounds

Back

all compounds are also molecules

Front

Oxygen, Nitrogen, Hydrogen, and Calcium are all examples of ______________________.

Back

elements

Front

Which one of the following is a compound? NaCl, O2, Hydrogen, He2

Back

NaCl

Front

What is a substance with unique physical and chemical properties that can't be reduced by chemical means?

Back

an element

Front

How are molecules and compounds different?

Back

Compounds have to have atoms from different elements bonded together.

Front

Are models a perfect representation of the things they depict? Why or why not?

Back

No, models have limitations and can only effectively represent certain things.

Front

What type of model is pictured here?

Back

space filling model