Unit 0 Review

Safety

100

When are you to use the class shower or eye wash stations?

ONLY when exposed to a significant spill or splash of hazardous materials onto the body.

200

Where is the emergency medical kit located in the room?

Bottom of cabinet closest to the lab prep room.

300

When are you allowed to go into the lab prep room?

Only if directed by Miss McMullen to do so or during a lock-down.

400

If glassware breaks, what should you do? Not do?

Tell Miss McMullen so I can dispose of it properly.

500

What safety symbol is on the whiteboard?

Chemical Safety

Lab Equipment

100

What lab equipment measures the mass of an object?

Scale

200

What is this and what is it used for?

Scoop; Used to transfer substances from one container to another.

300

What hazaards are associated with beakers?

They could chip or shatter.

400

What must you do to a scale before you use it to measure your object's mass?

Tare It

500

If both beakers and graduated cylinders measure volume, why would you use one over the other?

Graduated cylinders for smaller, more precise measurements. Beakers for larger, less precise measurements.

SI Units

100

Convert 7 mg to the SI Unit for mass.

0.000030 kg

200

Convert 47 km to the SI Unit for length.

47,000m

300

Convert 7 hrs to the SI Unit for time.

25,200 s

400

What is the mass of an object that has a density of 75 g/mL and a volume of 125 mL? Then convert this to the SI Unit for mass.

1st answer: 9,375 g

2nd answer: 9.375 kg

500

An object measures 3cm x 4cm x 7cm. What is the volume of this object expressed in the SI Unit for volume?

0.000084m³

Dimensional Analysis

100

Convert 27oz to g.

766.8g

200

Convert 14^oC to K.

287.15K

300

Convert 12in to the SI Unit for length.

0.3049m

400

Convert 21qt to mL.

19,811.32mL

500

How many yards are in 500cm?

5.47yrds

Scientific Methods / Models

100

What can you use to form observations?

Senses and tools of measurement

200

How is a hypothesis typically stated?

If-then

300

Newton's Laws of Motion are scientific laws. What type of model would they be considered.

Conceptual Model

400

What are the 7 main steps of the Scientific Method?

Observations, asking questions, form hypothesis, test hypothesis, analyze results, form conclusions, share with others

500

Compare and contrast scientific theories from laws.

Theories: 

-Explains “how” or “why” something happens

-Verifiable explanation for natural phenomena

Laws: 

-Describes “what” happens, but doesn’t explain “why”

-Specific statement based on many experiential results and observations confined to a certain set of conditions