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