Unit 1: Intro to Chem (gen chem)

Measuring

100

How do you find the volume of a regularly-shaped, solid object?

Length x Width x Height

200

Which unit is used in science to measure density?

g/cm³ or g/ml

300

What is the equation for density?

D=m/v

400

If a graduated cylinder has a marking for every 1 ml, how many places after the decimal should your reading have if measuring in ml?

1 place after the decimal

500

If a meter stick has markings every .1cm, how many places after the decimal should you reading have if measuring in cm

2 places after the decimal

Conversions

100

Convert 1,500g to kg

1.5kg

200

Convert 30 liters to ml

30,000ml

300

Convert 50 yards to meters (1 meter = 1.09yards)

45.72m

400

Convert 1,700 mexican pesos to US dollars (1 USD = 20.10 Mexican Pesos)

84.58 Mexican Pesos

500

How many hours are in 30,000 seconds? (1 hr= 60 minutes, 1 minute= 60 seconds) Show fractions

8.33hrs

Classification of Matter

100

If matter can be physically separated, it is a(n)...

Mixture

200

If a mixture has a uniform composition throughout, it is a(n)...

Homogeneous mixture

300

If a pure substance cannot be broken down into a different substance through a chemical reaction it is a(n)...

Element

400

Well-made black coffee is an example of a(n)...

A. Element

B. Compound

C. Homogeneous Mixture

D. Heterogeneous Mixture

C. Homogeneous Mixture

500

Oxygen gas (O₂) is an example of a(n)...

A. Element

B. Compound

C. Homogeneous Mixture

D. Heterogeneous Mixture

B. Compound (oxygen = diatom)

Lab Safety

100

What is always the last step of any lab?

Clean up your work space

200

What are at least 2 safety precautions you should take when using bunsen burners?

-Tie up long hair

-No loose or baggy clothing

-Make sure gas is switched off when not in use

-Never leave flame unattended

300

If you know for sure that a substance is non-toxic, why can you still never eat it from the chem equipment?

The equipment could have toxic residue form previous use

400

What is something that is permitted in your lecture seating, but not allowed in the lab stations?

Eating, drinking, chewing gum

500

Name three lab safety rules that were on the Lab Safety Contract

Responses will vary

Potpourri

100

A balance is used to take what type of measurement? (eg. length, volume, etc...)

Mass

200

What unit is used to measure length in science

The centimeter (or meter, etc.)

300

What happened to King Henry?

He "died by drinking chocolate milk"

400

Mayonnaise is an example of which classification of matter?

A colloid (which is a homogeneous mixture)

500

What is the volume of a box that is 2cm x 4cm x 10cm (include units)

80cm³