September 13

#### I. Lab Equipment

a. Digital Balance – used to weigh things digitally (small things accurately)

b. Dropper – measures one drop at a time

c. Beaker – Holds liquids – usually in ml

d. Erlenmeyer Flask – to mix liquids manually

e. Forceps – to pick up small things

f. Triple Beam Balance – weigh things manually

g. Pipette – measures specific amount of liquid

II. A good Hypothesis

• It is logical
• It can be tested
• Can be an “if-then” statement

III. Scientific Method

1. Make an observation
3. Form a hypothesis
4. Conduct an experiment – collect data
5. Write a conclusion

IV. Independent/Dependent Variable

Independent Variable is manipulate variable (I make the changes)

Dependent Variable is the measured outcome (Data is recorded)

V. Converting Metric Units

King Henry Doesn’t Usually Drink Chocolate Milk

K = kilo (1,000)

H = hecto (100)

D = deca (10)

U = Units – meter, liter, gram

D = deci (1/10)

C = centi (1/100)

M – milli (1/1000)

• Write base units under the U
• Put your finger on the starting unit
• Count letters right or left to the units you are converting to
• Move the decimal point that many spaces right or left