Unit 1 Review

Unit 1 Review

Let's go over what we went over.

Multiple Choice

What is the unit for volume?

• mL OR cm³

• just mL

• g

• km

Multiple Choice

What is the unit for mass?

• g

• mL OR cm³

• km

• just cm³

Multiple Select

Check all that apply: which examples are SI Units?

• gallon

• Joule

• milligram

• kilometer

• mile

Multiple Choice

What does the prefix "milli" mean?

• 100x bigger

• 100x smaller

• 1000x bigger

• 1000x smaller

Sig Fig time!

Good luck

Open Ended

Why is 1 a more accurate measurement than 1.000?

Multiple Choice

How many sig figs are in 0.03?

• 1

• 2

• 3

• 0

Multiple Choice

When counting sig figs are ALL zeros always NOT significant?

• yes

• no

Unit Conversion using Dimensional Analysis

Multiple Choice

254.3 g = ___ kg

• 2.543 kg

• .2543 g

• 0.2543 kg

• 25430 kg

Multiple Choice

How many inches will a person run during a 25.0 kilometer race? (make sure you use proper sig figs in your answer!)

• 984252

• 984,000

• 984250.0

• 984200

Classifying Matter

'cause you matter.

Multiple Choice

What is the difference between a compound and an element?

• elements are made of the SAME type of atoms, compounds are a MIXTURE of atoms

• elements are made of the same types of atoms and compounds are different types of atoms bonded together

• elements are made of the same types of atoms and compounds are a combination of different types of atoms

• elements bond to form compounds

Multiple Select

Check all that apply for pure substances

• elements

• compounds

• heterogeneous mixture

• silver

• water

Multiple Choice

Does Argon (Ar) gas have a low or high melting point? How?

• low-- it's a gas in it's natural state

• high- it's a gas in its natural state

• low - it's a solid in its natural state

• high - it's a solid in its natural state

Multiple Choice

What is a BEST possible reason for the differences between melting points or boiling points of certain elements (or compounds)?

• the temperature influences particle movement for certain compounds/elements

• the surrounding environment (i.e. pressure) changes states of matter

Multiple Select

Check all the images that are CHEMICAL CHANGES

Multiple Select

Check all the examples that are elements

• Co

• CO

• Br

• H₂

• H₂O

Multiple Select

Check all the examples that are compounds

• CO₂

• Ni

• NaOH

• MgCl₂

• F₂

Multiple Choice

Classify the type of change that occurs when water undergoes electrolysis.

• Physical

• Chemical

Multiple Choice

What kind of change occurs when a compound breaks apart into elements?

• Physical

• Chemical

• both

Open Ended

Why was the chromatography experiment (coffee filter and marker) a physical separation and not a chemical change?

Atoms and their properties

Multiple Select

Check off all the metals

• Ne

• F

• Na

• Ag

• K

Multiple Select

Check off all the non-metals

• Xe

• He

• O

• Ag

• C

Multiple Choice

If a substance is malleable, conducts electricity, shiny we can classify it as:

• metal

• non-metal

• metalloid

• plasma

Multiple Choice

If a substance is brittle, dull, non-magnetic, and cannot conduct electricity we can classify it as:

• metal

• non-metal

• metalloid

• plasma

Multiple Choice

What is the state of matter of the majority of the elements on the periodic table?

• solids

• liquids

• gases

• plasma

Multiple Select

Check off all the metalloids

• Ti

• Ge

• Si

• Pb

• W

Density

Multiple Select

What two units make up Density? (check all that apply)

• g and mL

• cm³ and mL

• g and cm³

• km and mL

Multiple Choice

What is density?

• how much matter occupies a certain amount of space

• how much space resides within a box

• the amount of stuff inside an atom

• the quantum mechanics of spacetime

Multiple Choice

If I had 45 g of a substance and it's density was 6.56 g/mL, what would be the amount of space it occupies?

• 6.9 mL

• 295.2 mL

• 0.15 mL

• 6.9 g