Scientific Method
Stated in an IF.....THEN....statement.
Hypothesis
the smallest building block of all matter
atom
anything that has mass and takes up space
matter
Hotter fluids tend to move faster and __________ while cooler fluids tend to mover slower and sink.
Rise
What is the chemical formula of water?
H2O
Something experienced directly through the 5 senses.
observation
oxygen, carbon, nitrogen, helium are all examples of this
an element
What unit of measurement is standard for finding the volume of water?
ml or liters
conduction
What is the rule about dissolving?
Like dissolves like
Usually organized in tables, graphs or charts.
data or results
trail mix, soup, pebbles and stones are examples of this kind of mixture
heterogeneous mixture
length x width x height
Hot pads, coats, Styrofoam and rubber are examples of this.
insulators
molecules that have unequally distributed charges are called this
polar
The variable that is tested in an experiment is called...
the independent variable
a mixture in which the particles of a substance are dispersed throughout and are not large enough to settle - shows the Tyndall effect
colloid
Each item has its density written behind it. Which item would float in water?
wood 1.56 g/ml
plastic cube .92 g/ml
steel nail 4.56 g/mlplastic cube
Radiation occurs from the sun all the way to the earth traveling through outer space because it does not require this:
a medium to travel through
Water really like water. This causes like a skin on the top of water. This is called
surface tension
This tells what HAPPENS consistently across the Universe. It is often stated mathematically.
Scientific Law
Mary had a mystery substance. It was lime green with chunks of black. When she shook it, she notice that the black chunks eventually settled at the bottom. What kind of mixture does Mary have?
Suspension
What is the density of the following object:
Mass 150g
Volume 5ml
30g/ml
What is the rule about heat transfer when it comes to conduction?
Temperature is always conducted from a higher to a lower temperature.
In order to find out if a substance is polar or non polar, what could you do with it?
Put it in water and see if it easily mixes or not.