Scientific Method
Definition of hypothesis
What is an educated guess?
-A prediction of the outcome of an experiment
Opposite of multiplication
What is division
The number of dollars in 353 cents
Show work!
What is $3.53?
353 x (1/100)
Or
353 / 100
The two main types of mixtures
What are heterogenous and homogenous mixtures?
The number of sig figs in 545
What are 3 sig figs?
The last step of the scientific method
What is the conclusion?
y=mx+b
When solving for "x", you do this first
What is subtract b.
(-b on both sides)
505m to cm
What is 50500cm?
A mixture in which you can see all the different parts
What is a heterogenous mixture?
The number of sig figs in 505
What are 3 sig figs?
A hypothesis for an experiment testing mouse memory in a timed maze with differing amounts of sleep
What is:
-Mice with less sleep will take longer to complete the maze
Solve for "x"
y=mx+b
(get "x" alone on one side)
What is x=(y-b)/m
Or x=y/m-b/m
0.0425hL to mL
What is 4250 mL?
If a material is not a mixture, it is this
What is a pure substance?
The number of sig figs in 500
What is 1 sig fig?
The two main variables in an experiment
What are the independent and dependent variables?
Solve for "m"
D=m/v
What is m=Dv?
The number of km in 5 mi? (1 mi=1.6 km)
Show work!
5 mi x (1.6km/1mi)
Or
5 x 1.6
Answer: 8km
Separate salt and sand
Filter salt water and sand - get sand left behind
Evaporate water - get salt
Solve this dateline: 09.16.21=20
Check boards
All the steps of the scientific method
1) Ask a question
2) Research
3) Form a hypothesis
4) Conduct an experiment
5) List observations - State results
6) Conclusion (Restate hypothesis)
Solve for "T"
PV=nRT
What is T=PV/nR?
Inches in 220cm (1 in=2.5 cm)
Show work!
Or
220 / 2.5
Answer: 88 in
3 of the 6 mixture separation techniques
1) Seiving/sifting
2) Filtration
3) Evaporation
4) Magnetization
5) Distillation
6) Chromatography
Solve this dateline: 09.16.21=100
Check the boards