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Chemistry/Electricit
Chemistry/Electricity
Question | Answer |
---|---|
Organic chemistry is the study of substances containing: A.carbon B. water C.hydrogen D.organisms | A.carbon |
Examples of organic substances include: A.pesticides B.minerals C.pure water D.metals | A.pesticides |
Matter is any substance that: A.occupies space B.contains carbon C.is soluble in water D.is either a solid or liquid | A.occupies space |
The particles from which all matter is composed are: A.elemental molecules B.compound molecules C.atoms D.chemical compounds | C.atoms |
Two or more atoms of the same element that are united chemically form a/an: A.elemental molecule B.chemical compound C.solid to liquid D.state of matter | A.elemental molecule |
When water boils, it is changing from one state of matter to another, from: A.liquid to gas B.gas to liquid C.solid to liquid D.solid to gas | A.liquid to gas |
When a physical change occurs in a substance, there is: A.a change in physical properties B.no change in state of matter C.the formation of a new substance D.a chemical reaction | A.a change in physical properties |
The action of permanent haircolor is an example of a: A.physical change B.temporary change C.chemical change D.change in state of matter | C.chemical change |
Water (H2O) is an example of a/an: A.chemical compound B.element C.physical mixture D.solution | A.chemical compound |
Salt water and fruit salad are examples of a/an: A.pure substance B.physical mixture C.chemical compound D.element | B.physical mixture |
A blended mixture of two or more solids, liquids, or gases is a/an: A.solution B.suspension C.emulsion D chemical compound | A.solution |
Liquids that can be mixed together in any proportion without separating are: A.suspended B.immiscible C.emulsified D.miscible | D.miscible |
A substance that dissolves another substance to form a solution, with no change in chemical composition, is a/an: A.surfactant B.solvent C.emulsion D.solute | B.solvent |
A mixture that must be shaken or mixed well before using is a/an: A.suspension B.solution C.oil-in-water emulsion D.water-in-oil emulsion | A.suspension |
Most of the emulsions used in a salon: A.are water-in-oil emulsions B.do not use surfactants C.contain more oil than water D.are oil-in-water emulsions | D.are oil-in-water emulsions |
Emulsions are mixtures of two or more: A.miscible substances B.surfactants C.immiscible substances D.solutions | C.immiscible substances |
The head of a surfactant molecule is eater-loving, or: A.immiscible B.hydrophilic C.hydrophobic D.lipophilic | B.hydrophilic |
Substances that are often used instead of ammonia in hair products because their odor is not as strong are: A.silicone B.alcohol C.alkanolamines D.glycerin | C.alkanolamines |
A colorless gas with a strong odor, composed of hydrogen and nitrogen, is: A.glycerin B.fatty alcohol C.ammonia D.hydrogen peroxide | C.ammonia |
In pure water, some of the molecules naturally ionize into hydrogen ions and: A.nitrogen ions B.peroxide ions C.hydroxide ions D.oxygen ions | C.hydroxide ions |
pH is only possible because of the ionization of: A.alcohol B.water C.oil D.nonaqueous solutions | B.water |
The pH scale measures: A.acidity & alkalinity B.melting point & boiling point C.purity & hardness D.weight & density | A.acidity & alkalinity |
Solutions with a pH below 7.0 are: A.neutral B.alkaline C.basic D.acidic | D.acidic |
Alkalis have a pH above 7.0 and: A.taste sour B.turn blue litmus paper red C.soften and swell the hair D.contract and harden the hair | C.soften and swell the hair |
The average pH of hair and skin is: A.seven B.five C.three D.12 | B.five |
When a substance is combined with oxygen, the process is called: A.oxidation B.redox reaction C.reduction D.ionization | A.oxidation |
The chemical reaction in which hydrogen is added to a substance is: A.oxidation B.redox reaction C.reduction D.ionization | C.reduction |
A substance that readily transmits electricity is a/an: A.insulator B.rectifier C.converter D.conductor | D.conductor |
Rubber and silk are good: A.conductors B.circuit breakers C.converters D.conductors | A.conductors |
A constant electrical current traveling in one direction only is called a/an: A.alternating current B.direct current C.faradic current D.sinusoidal current | B.direct current |
A unit of electrical pressure is referred to as a/an: A.volt B.ohm C.watt D.ampere | A.volt |
An ampere (amp) is a unit of electrical: A.strength B.tension C.watt D.ampere | A.strength |
The amount of electrical energy that is being used in one second is measured in: A.watts B.amps C.volts D.ohms | A.watts |
A device that automatically interrupts or shuts off an electric circuit in the event of overload is the: A.fuse B.wall plate C.circuit breaker D.converter | C.circuit breaker |
Electronic facial treatments are known as: A.electrotherapy B.light therapy C.hydrotherapy D.shock therapy | A.electrotherapy |
The positive electrode of an electrotherapy device is called a/an: A.plug B.anode C.wall plate D.cathode | B.anode |
In electrotherapy, the cathode is: A.usually red B.the negative electrode C.the positive electrode D.marked with a plus (+) sign | B.the negative electrode |
A constant and direct current used to produce chemical effecxts on the tissue and fluids of the body is the: A.sinusoidal B.faradic current C.galvanic current D.tesla current | C.galvanic current |
An alternating and interrupted current used to cause muscular contractions is the: A.galvanic current B.faradic current C.faradic current D.tesla current | C.faradic current |
an electrical current used for its heat-producing effects is the: A.sinusoidal current B.galvanic current C.faradic current D.high-frequency current | D.high-frequency current |
The anode (positive electrode) of a galvanic device: A. expands blood vessels B.opened the pores C.contracts blood vessels D.produces alkaline reactions | C.contracts blood vessels |
The cathode (negative electrode) of a galvanic device: A.soothes nerves B.closed the pores C.stimulates the nerves D.hardens and firms tissues | C.stimulates the nerves |
The process of softening and emulsifying oil deposits and blackhead in the follicles is: A.cataphoresis B.anaphoresis C.desincrustation D.iontophoresis | C.desincrustation |
Visible light makes up __% of natural sunlight. A.50 B.5 C.35 D.65 | C.35 |
Ultraviolet (UV) rays, also called cold rays or actinic rays, have short wavelengths and: A.are the least penetrating rays B.produce the most heat C. are safe in large doses D.have no germicidal effect | A.are the least penetrating rays |
The invisible rays that produce the most heat are the: A.ultraviolet rays B.infrared rays C.red light rays D.actinic rays | B.infrared rays |
It is estimated that ___ Americans will develope skin cancer. A.1 in five B.1 in 100 C. 1 in 1,000 D.1 in 50 | A.1 in five |
"Combination light" is also known as: A.white light B.blue light C.ultraviolet light D.red light | A.white light |
The average distance you should place an infrared lamp from the skin is about: A.18" B.10" C.30" D.24" | C.30" |
A safety precaution you shold always follow with electrical equipment is to: A.step on electrical cords B.use only one plug per outlet C.handle equipment with wet hands D.clean outlets with equipment plugged in | B.use only one plug per outlet |