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Scientific Method

Lab Equipment

Safety

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VariablesConversions

1m Km

0.001 Km

49 g mg

49,000 mg

6.7 cL ml

67 ml

83 dm μm

8.3 x 10^6

756 ng g

7.56x10^-7

What is the first step for any

scientific investigation?

Observation

What is the difference between a hypothesis and a

theory?

Hypothesis: a proposed explanation

Theory: an organized collection of data,

observations, hypothesis and information

Measurements made during an experiment are

called…

Data

What is a controlled

experiment?

Experiment where only ONE variable

is changed

Explain the difference between a control group and

an experimental group

Experimental group: everything is the same as the

control group EXCEPT for one

variable

What is an independent

variable?

The variable deliberately

changed by the researcher

The variable that changes in response to the independent

variable.

What is… the dependent variable?

Give the independent variable for the following:

Children who drink two glasses of soda a day will be on average

two inches shorter than those who do not drink soda.

Glasses of soda

Give the dependent variable for the following:

Apple trees that receive the most amount of sun produce the biggest

apples.

Size of apples

Give the independent AND dependent variable for the

following:

The age that a bunny lives to varies greatly according to the amount of carrots that it consumes each day.

Independent: Amount of carrots

Dependent: Age of bunny

Test Tube Rack

What is…used to hold test tubes?

Graduated Cylinder

What is… used to determine precise volume of liquids?

Scale

What is… used to measure the mass

of an object?

Test Tube

What is… used to mix and heat small

quantities of reactants?

Erlenmeyer Flask

What is… used for mixing solution

when swirling or boiling is required?

Fire Blanket

What is… put out a fire on a person?

Eye Wash Station

What is… used to rinse out eyes in case of splash, irritation, etc?

Goggles

What is… used to protect eyes during lab experiments?

Demo Lab Table

What is… used to demonstrate safe techniques in the

lab?

Emergency Stop

What is… used to turn off electricity and gas to all lab

stations?

Make your wager

How does science influence society?

Solves problems, advances technology,

higher quality of living, increasing

human understanding, etc