Pure Substances vs. Mixtures

How can compounds be changed into simpler substances?

• by physical separation
• by chemical changes
• they cannot be changed
• by physical reactions

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A pure substance that cannot be broken down into other substances by chemical or physical means. 

• compound          
• atom
• mixture 
• element

A mixture that is uniform and well mixed is _____.

• homogeneous
• hetergeneous
• pure substance
• compoud

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

Tags

NGSS.MS-PS1-1

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

Tags

NGSS.MS-PS1-1

A pure substance made up of two or more elements that are chemically combined. 

• compound          
• atom
• mixture 
• element

Tags

NGSS.MS-PS1-1

The building block of matter is

• Mixture
• Atom
• Element
• Substance

Tags

NGSS.MS-PS1-1

This contains a variety elements and compounds that ARE NOT chemically combined.

• Water
• Mixture

Ocean water is a __________ mixture

• Homogeneous
• Heterogeneous

Alex goes into the garden and digs up a shovel full of dirt.  This is a _____________ mixture.

• Homogeneous
• Heterogenous