Chemistry Unit Review

What are the smallest parts of pure substances that cannot be broken down into simpler substances? 

• Mixtures
• Elements
• Atoms
• Molecules

Which of the following is a compound?

• CO₂
• H
• O
• Na

Tags

NGSS.MS-PS1-1

Iron, mercury, lead, sulfur, chlorine, sodium, and uranium are all examples of which type of matter?

• Atoms
• Compounds
• Elements
• Mixtures

What type of element usually has a dull appearance and is generally NOT a good conductor of heat or electricity?

• Metal
• Metalloid
• Nonmetal
• Solid

Saltwater is classified as what type of matter?

• an atom
• an element
• a compound
• a mixture

A certain element is dense, shiny, and is a good conductor of both heat and electricity. Based on these characteristics, what type of element is this?

• Metal
• Nonmetal
• Metalloid
• Plastic

As seen in the chart, the observer noticed that material A was shiny, or that it reflected light.  This quality is known as

• Color
• Luster
• Contrast
• Malleability

In the chart, material B is not malleable.  How do we know this?

• It is dull and not shiny
• it breaks apart when hit by a hammer
• it changes shape when hit with a hammer
• It catches fire when held over a Bunsen burner.

Tags

NGSS.MS-PS1-2

In the chart, material A is “small but heavy”.  What conclusion can be drawn from this?

• Material A is brittle
• Material A is not malleable
• Material A is high density
• Material A is a non-conductor

Based on the descriptions from the chart, it is very likely that material A is which of the following? 

• Metal
• Metalloid
• Nonmetal
• Renewable Resource

Tags

NGSS.HS-PS1-1