Pre-Summative Review, Mixtures & Compounds

Pre-Summative Review, Mixtures & Compounds

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​Pure Substances

• ​same chemical composition all the way through

• ​have a chemical symbol or formula

• includes elements and compounds

​Interpreting a Diagram

• ​Is every particle identical?

• ​If NOT, then it is a Mixture.

• ​If Yes, then it is a Pure Substance

• ​Is it an Element or a Compound?

• ​If each particle has more than 1 type of atom, then it is a COMPOUND.

• ​If each particle has only 1 color then it is an ELEMENT.

Multiple Choice

What class of matter does this diagram show?

• Element

• Compound

• Mixture

​Elements

• ​made of only 1 type of atom

• ​CANNOT be broken down any further BY ANY MEANS

• ​ Chemical symbol has ONLY 1 uppercase letter.

​Oxygen (O)

​

​Iron (Fe)

​

​Hydrogen (H)

Compounds

• ​Made up of DIFFERENT atoms

• ​CHEMICALLY BONDED

• ​Can only be broken down into simpler substances by CHEMICAL means.

• ​cannot be broken down by chemical means

• ​Chemical formula made up of more than 1 uppercase letter

CO₂

Fe₂O₃

NaCl

Multiple Choice

What class of matter does this diagram show?

• Element

• Compound

• Mixture

Multiple Choice

What class of matter does this diagram show?

• Element

• Compound

• Mixture

Multiple Choice

What class of matter does this diagram show?

• Element

• Compound

• Mixture

Multiple Choice

What class of matter does this diagram show?

• Element

• Compound

• Mixture

Multiple Choice

Copper Sulfate (CuSO₄ ) _{is _______________}

• an Element.

• a Mixture.

• a Compound.

Multiple Select

Which of the following are pure substances?

• $$Fe$$  

Multiple Choice

Cobalt (Co) is ____.

• an Element.

• a Compound.

• a Mixture.

Multiple Choice

Silver (Ag) is a __.

• Element

• Compound

• Mixture

Multiple Select

Which of the following substances are homogeneous mixtures?

• air

• trail mix

• salt water

• milk

Multiple Select

Which of the following substances are heterogeneous mixtures?

• coffee

• trail mix

• chicken noodle soup

• kool-aid