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Flashcards in Lab concepts Deck (28)
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1
Q

When should goggles be worn?

A

Anytime anyone is doing a lab

2
Q

When is it safe to eat in the lab?

A

Never

3
Q

After you use a bottle of chemical

A

Put it away in the proper location

4
Q

While carrying out an experiment, you should wear

A

goggles, lab coat, pants, closed toed shoes

5
Q

What do you do with extra chemicals poured out?

A

Pour them in a trashcan

6
Q

Broken glass goes

A

in the broken glass box

7
Q

What do you do if you cut yourself

A

tell the instructor

8
Q

What do you use to neutralize hydrochloric acid?

A

baking soda

9
Q

hydrochloric acid in the eye

A

eye wash station and tell the instructor

10
Q

Light yourself on fire

A

Use safety shower to put out the flames

11
Q

Beaker

A

Glass cup with various volumes

12
Q

Wash bottle

A

Squirt bottle

13
Q

Graduated cylinder

A

measures volume of liquids

14
Q

Stirring rod

A

Glass rod

15
Q

Striker

A

Lighter

16
Q

Crucible tongs

A

Picks up hot things

17
Q

Hydrometer

A

Measures specific gravity

18
Q

Erlenmeyer flask

A

Chem lab looking beaker

19
Q

Buret

A

Measures a chemical being dispensed

20
Q

Rules for sig figs

A

Division/Multiplication: least amount of # of valid digits

Addition/Subtraction: Least amount of decimals

21
Q

How to measure length

A

Read between the lines. Always one estimated digit.

22
Q

How to measure volume

A

Read between the lines. Always one estimated digit.

23
Q

Determine the volume of a solid two ways:

A

Measurement (LxWxH) cm^3

Volume displacement

24
Q

Density

A

volume

25
Q

Specific gravity

A

Equals density

No units

26
Q

Read specific gravity

A

From a hydrometer

27
Q

Calculate percent error

A

|Approximate Value − Exact Value|
——————————————– × 100%
|Exact Value|

28
Q

Electron dot structures

A

Dont pair dots unles there are more than 4 valance electrons