Elements, Compounds, Mixtures - Revision

What is an Element?

• A substance that can't be broken down into other substances

• The trio: Fire, Water, Ice

• Who knows?

• A mixture of two substances

A pure substance that cannot be separated into simpler substances by chemical or physical means.  

• Element
• Compound
• Mixture
• Chemical

A compound is made of ________ atoms. 

• big 
• similar 
• different 

Carbon Dioxide is a ______ 

• compound 
• element 
• mixtures 
• Battle of Bunker Hill 

These contain only one kind of atom. 

• element 
• compound 
• mixture 
• water 

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

• Compound
• Element
• Mixture
• None of the Above

Iced Tea (with ice in it)

• Element
• Compound
• Heterogenous Mixture
• Solution

Pizza

• Element
• Compound
• Heterogenous Mixture
• Solution

The chart below lists some substances and their symbols. How many of these substances are examples of elements?

• 1

• 2

• 3

• 4