Elements and Chem Changes

The best word to describe elements is 

• compound
• metals
• pure
• mixed

Metals ________ heat and electricity. 

• stop
• conduct
• insulate

The letter or letters representing an element are called a(n)

• symbol
• abbreviation
• sign
• grouping

Our first objective, knowing the difference between elements and compounds, is Texas TEK number...

• 6.5A
• 6.5C
• 6.69B
• 5.5A

A precipitate is a(n)

• gas
• liquid
• solid
• rain

Bubbles are an informal way to describe what kind of evidence?

• color change
• gas formation
• a new substance
• temperature change

Color changes can be related to _______________ reactions/changes. 

• physical
• chemical
• physical and chemical
• paint

A precipitate is formed from

• liquids
• solids
• gases
• water and air

NaCl is a 

• mixture of elements
• element
• compound
• symbol

Symbols contain up to how many capital letters?

• 1
• 2
• 3
• 4