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Flashcards in Lab concepts Deck (28):
1

When should goggles be worn?

Anytime anyone is doing a lab

2

When is it safe to eat in the lab?

Never

3

After you use a bottle of chemical

Put it away in the proper location

4

While carrying out an experiment, you should wear

goggles, lab coat, pants, closed toed shoes

5

What do you do with extra chemicals poured out?

Pour them in a trashcan

6

Broken glass goes

in the broken glass box

7

What do you do if you cut yourself

tell the instructor

8

What do you use to neutralize hydrochloric acid?

baking soda

9

hydrochloric acid in the eye

eye wash station and tell the instructor

10

Light yourself on fire

Use safety shower to put out the flames

11

Beaker

Glass cup with various volumes

12

Wash bottle

Squirt bottle

13

Graduated cylinder

measures volume of liquids

14

Stirring rod

Glass rod

15

Striker

Lighter

16

Crucible tongs

Picks up hot things

17

Hydrometer

Measures specific gravity

18

Erlenmeyer flask

Chem lab looking beaker

19

Buret

Measures a chemical being dispensed

20

Rules for sig figs

Division/Multiplication: least amount of # of valid digits

Addition/Subtraction: Least amount of decimals

21

How to measure length

Read between the lines. Always one estimated digit.

22

How to measure volume

Read between the lines. Always one estimated digit.

23

Determine the volume of a solid two ways:

Measurement (LxWxH) cm^3

Volume displacement

24

Density

mass
--------
volume

25

Specific gravity

Equals density
No units

26

Read specific gravity

From a hydrometer

27

Calculate percent error

|Approximate Value − Exact Value|
-------------------------------------------- × 100%
|Exact Value|

28

Electron dot structures

Dont pair dots unles there are more than 4 valance electrons