Chemistry and the Scientific MethodAgenda

•Review names

•Submit safety contract

•Review elements

•Safety Review

•Class notes on Chemistry

Submit Safety Contract

Record on grade sheet if submitted or not!

Hydrogen

H

Lithium

Li

Sodium

Na

Beryllium

Be

Potassium

K

Hydrogen

H

Magnesium

Mg

Potassium

K

Calcium

Ca

Lithium

Li

Strontium

Sr

Barium

Ba

Sodium

Na

Beryllium

Be

Magnesium

Mg

Calcium

Ca

Hydrogen

H

Strontium

Sr

Barium

Ba

Beryllium

Be

Lithium

Li

Magnesium

Mg

Barium

Ba

Sodium

Na

Calcium

Ca

Potassium

K

Strontium

Sr

Safety Rules Review

• Where is the fire extinguisher?

• Where is the eye wash?

• Where do we meet in case of a fire?

• Where is the shower?

• Where is the fire blanket?

• Where is the phone?

• Where is your nearest exit?

Scientific Method

Date:

Chemistry

• Definition: is the study of matter and the changes that it undergoes.

• Rewrite this definition in terms that an elementary student would understand.

Scientific Method• Write the 6 steps of the scientific method

1. State the problem• What will you be investigating?

2. Gather information• What research is necessary to investigate

problem?

3. Hypothesis• A tentative explanation of some regularity of

nature.

4. Experiment• Completing the investigation.

5. Record and Analyze Data• Collecting the data to prove a point!

6. Conclusions• What does all the data mean?

Beyond the Scientific Method

• A theory is a TESTED explanation of basic natural phenomena.

• A Scientific law is a theory proven correct and there are no exceptions.

Scientific Method in motion

• Watch this short clip of Jack, Jack Attack

• Look for the use of the scientific method.

Observations (data)Could be :

• qualitative – describe color, odor, shape, etc…

• quantitative – measured data: temperature, pressure, volume, mass, length

• Which is better?

Variables

May be:

• independent – controlled variable (time, temperature) (X-axis)

• dependent – changes depending on independent variable (Y-axis)

• Need a control – a standard to compare the data to.

Laboratory Equipment

• We will be using lots of equipment this trimester.

• Please roam through the colored posters to discover what is stored in each section. Be prepared to share your findings!

Forceps or Tweezers

Wire gauze

Watch glass

funnel

Graduated cylinder

BeakerBeaker

Bunsen Burner

spatula

Ring stand

Ring