Unit 1 - Lesson 1 Energy and states of matter

What are three common phases of matter?

• solid, liquid and gas

• atom, element and molecule

• mixture, solution and compound

• mass, volume and temperature

 

The smallest particles of matter are __________.

• compounds

• elements

• atoms

• molecules

Water becomes a solid when __________.

• temperature is increased

• temperature is decreased

 

Compress means to __________.

• flatten by pressure

• melt

• increase temperature

• decrease mass

 

Gases __________.

• have a fixed shape

• are easily compressed

• have particles that do not flow easily

• have a definite volume

The glass in the first picture had the temperature shown.  About fifteen minutes later, it had the new temperature as shown in the second picture.  What happened to the glass during that fifteen minutes?

• Someone put the glass outside on a warm day.

• Someone put the glass next to a hot stovetop.

• Someone put the class in the freezer.

• Nothing happened to the glass

Which of the following could be a symbol on he periodic table of elements?

• JZ

• Jz

What is made up two or more elements that are chemically combined?

• Element

• Mixture

• Compound

• Solids

Which of the following an element?

• Carbonic Acid

• Copper

• Water

• Iron and Copper

How many elements are represented in the compound? Na₂CO₃

• 1

• 2

• 3

• 4