Scientific Method
What is the scientific method?
What is the unit of measurement for Temperature?
Kelvin
how many significant figures are present in this figure...
5764.00 A
6 sf
What is diffusion?
the movement of gaseous or dissolved particles from an area where they are highly concentrated to an area where they are less concentrated until evenly distributed.
What are the steps of the scientific method in the correct order?
what are:
Question, Hypothesis, Experiment, Observe and Record, Analyse and communication?
What is the unit of measurement for Electric Current?
Ampere
157000.. how many significant figures are present?
3 significant figures
What is an example of diffusion?
potassium permanganate crystals placed in a beaker of water, perfume sprayed, cooking scent etc.
Using this statement:
Label two petri dishes, two beakers, two measuring cylinder, two sieves and two test tubes GL and YL respectively.
Which part of the lab report would it be placed in and how would it be written?
A. THE METHOD
B. Two petri dishes, two beakers, two measuring cylinder, two sieves and two test tubes were labelled GL and YL respectively.
Convert 6.78 kilojoules to Joules
6780 Joules
79.040 kg has ___ significant figures
5 significant figures
What type of membrane is important for osmosis?
Partially/selectively permeable membrane.
What is a hypothesis?
Does a hypothesis have to be correct?
Develop a hypothesis from the topic: cooking chicken.
A hypothesis is an educated guess.
No it does not.
....
Frank travelled 567 meters to get from his house to Greg's. Calculate this in kilometers.
round 49876.65 to four significant figures
49880 significant figures
How is osmosis different diffusion?
- usage of the partially permeable membrane
- only water molecules will move.
Topic/area of interest- effect of colour of light on plant growth.
Problem/research question- Do plants grow faster under red or blue light?
Identify the independent and the dependent variable. b
Independent variable- color of light (red or blue)
Dependent variable- Rate of plant growth.
Peter uses up 0.307 joules of energy to move a box. Compute her usage in millijoules.
0.000307 milijoules.
what is 0.0871564700 to one (1) significant figures?
0.09
How is a hypertonic solution different from a hypotonic solution?
a hypertonic solution has a LOWER concentration of water in comparison to hypotonic solution