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Any substance that occupies space and has weight is what?
Matter
everything you can touch and everything you can see is matter except ________.
light and electricity
living and once-living bodies
chemicals and powders
liquids and gases
all of the elements known to science today, how many occur naturally on earth?
89
98
19
18
_______ are the basic unit of matter.
Atoms
Which of the following is TRUE when salt is dissolved into water?
Water is the solute and salt the solvent
Salt and water are both solutes
Salt is the solute and water, the solvent
Salt and water are both solvents
When immiscible liquids are combines, they form ______.
Solution
Suspension
Micible liquids
Stable mixtures
What is a solute?
A substance that is dissolved in a solution
What is a solvent?
A substance that dissolves a solute and makes a solution
Which of the following were the first surfactants?
Cooking oils
Nail polishes
Soaps
Motor oils
Acid-alkali neutralization reations occure when an acid is mixed with an alkali in equal proportions, balancing the total pH and forming water (H2O) and ______.
Nitrogen
Carbon dioxide
A Sulfur
A Salt
What accompanies the rapid oxidation of a substance during combustion?
An ionization of the substance
An endothermic reaction
The production of heat and light
Neutralization
Why should ammonia never be mixed with bleach?
They become unpredictable in their use
It dries out skin excessively
It "discolors" more than lightens the hair
It creats a potentially deadly gas
Which of the following is TRUE today of the disposal of many of the chemicals used in salons, spas, and barbershops?
There are no regulations in place anywhere across the US
Most states and countries have regulations in place
There are strict & universal regulations in place in the US
Most states and countries do not have regulations in place
What did the Safety Data Sheet (SDS) replace?
The material saftey data sheet (MSDS)
An SDS is formatted into how many catagories?
8
10
16
12
How many accepted pictograms are included in all SDS?
16
3
6
9
