Chemistry Quiz Prep - Lab Safety, Lab Equipment, Graduated Cylinder Measuring, and Scientific Method

whenever working with chemicals, burners, or any substance that might get into your eyes

Wear safety goggles

when working with chemicals or heated substances.

Wear apron

Tie back long hair

to keep it away from any chemicals, burners, or other laboratory equipment.

Remove or tie back any article of clothing or jewelry

that can hang down and touch chemicals or flames.

Read all directions and follow directions

exactly as they are written.

Never perform investigations

your teacher has not authorized.

When in doubt,

ask your instructor

Take care not to spill any materials, but if a spill does occur

ask your teacher about proper cleanup.

Never pour chemicals or other substances into

sink or trash container.

Never eat, drink, or bring food

into the lab.

Report all accidents immediately

no matter how minor

Be aware of the location of the

first-aid kit, fire blanket, and eye wash station.

Never reach over an

open flame.

When heating a test tube or bottle,

point the opening away from you and others.

Never heat

a closed container.

Never heat a chemical

you are not instructed to heat.

 chemical that is harmless when cool

can be dangerous when heated.

Maintain a clean work area and keep all materials away from

flames.

Never mix chemicals

for “the fun of it”.

Never touch, taste, or smell

a chemical unless instructed to do so by your teacher.

Use only those chemicals

needed for the investigation.

Dispose of all chemicals

as instructed by your teacher.

Never use

broken or chipped glassware

Of glassware breaks,

• notify your teacher and dispose of the broken glass as instructed.

Handle scalpels or razor blades

with extreme care.

• Always cut material

• away from you.

• Always clean up your station and wash your hands after

• every experiment.

Beakers

Erlenmeyer Flask

Graduated Cylinder

Buret & Buret Clamp

Volumetric Flask

Test Tubes

Test Tube Rack

Test Tube Clamp 

(Utility Clamp)

Test Tube Brush

Well Plate

Test Tube Holder

Ring Stand

Wire Gauze

Bunsen Burner

Clay Triangle

Iron Ring

Striker

Beaker Tongs

Crucible Tongs

Crucible w/ Cover

Watch Glass

Evaporating Dish

Rubber Stoppers

Funnel

Micro-

Pipettes

Forceps

Glass Stirring Rod

Mortar & Pestle

Electronic Balance

Wash Bottle

Safety Goggles

Weigh Boat

Thermometer

Scoopula

Spatula

Dropper

Science

he process of studying   the natural world.

Technology

the application of science.(making it useful)

The Scientific Method:

An organized approach to solve problems.

Steps in the Scientific Method: 1

Observe

• Qualitative Observations:

• Use your five senses

• Non-numerical properties

Examples of qualitative observations:

color
odor

size

texture

shape

hardness

Quantitative Observations:

• Measurements or quantities

• Numerical data

Examples of quantitative observations:

mass

temperature

volume

density

melting point

length

Identify a Problem or Ask a Question:

based on observations

Hypotheses

• Reasonable explanations for what was observed

• A hypothesis must be testable.

answer to a problem that must be thoroughly tested

to conclude whether it correctly solves the problem.

Experiments

• tests each hypothesis in order
  to prove/disprove them

in order for an experiment,its results, and conclusion to be accepted

it must be able to be repeated many times and by many different people with the same results.

Experiment Setup:

• materials and procedures are recorded

• only one variable is tested during the experiment

Independent

the variable that is changed during the experiment

Dependent

the variable that is observed during the experiment (result of changing the independent variable)

DRY MIX

Dependent, Responding, Y - Axis, Manipulated, Independent, X - Axis

During the experiment

data is recorded - usually in a data table

Data can be

qualitative, quantitative, or a combination of both.

Analyzing data may involve

• mathematical calculations, graphing, or even identifying patterns.

After all of the data has been analyzed

• a conclusion is drawn.

Theory:

An explanation about the natural world, not a guess, based on hypothesis and observations supported by testing. It answers how and why.

Law

Used to describe a natural phenomenon which has been tested over a long period of time under different conditions.

Steps for the Scientific Method

1. Observe

2. Hypothesis

3. Experiment

4. Analysis

5. Conclusion