A human hair is 75 um across. How many inches is this? STARTING AMOUNT ADD FACTOR ANSWER RESET *( ) 0.01 100 10 1x 10° 1 x 10-6 0.1 2.54 1 x 106 0.001 0.003 3.0 1 x 10-9 75 1000 0.33 0.00003 30 in mm cm pm
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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75
um across. How many inches is this?
STARTING AMOUNT
ADD FACTOR
ANSWER
RESET
*( )
%D
0.01
100
10
1
1x 10°
1 x 10-6
0.1
2.54
1 x 106
0.33
0.001
0.003
3.0
1 x 10-9
75
1000
0.00003
in
mm
cm
um
30"
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