Chap 6 + 7 Chemistry/Chemical/Electrical Safety Flashcards
What effect do alkalis have on hair?
Soften or swells hair
What effect to acids have on hair?
Contract and close the hair cuticle
Define direct current.
A constant, even-flowing current that travels in one direction only by chemical means
Define alternating current.
Rapid and interrupted current flowing first in one direction and then in the opposite direction; produced by mechanical means and changes directions 60 times per second.
______________ is a constant and direct current, having a positive and negative pole, that produces chemical changes when it passes through the tissues and fluids of the body.
Galvanic Current
What is microcurrent?
Extremely low level of electricity that mirrors the body’s natural electrical impulses.
What is Tesla High Frequency Current?
Thermal or heat producing current with a high rate of oscillation or vibration.
What does UVA or Aging light do?
Penetrates directly into the dermis of the skin, damaging the collagen and elastin. Used in tanning beds.
What does UVB or Burning light do?
Most associated with sunburns and causes burning of the skin as well as tanning, aging, and cancer. Can damage the eyes. Contributes to the body’s synthesis of vitamin D.
What is UVC light?
Blocked by the ozone layer. Has more energy than UVA and UVB. Kills bacteria and other germs.
What is the simplest form of chemical matter?
Element
A chemical combination of 2 or more atoms is a…
Molecule
Any substance that occupies space and has mass is…
Matter
The basic unit of matter is a(n)…
Atom
An example of an elemental molecule is…
The oxygen in air
Rusting iron and burning wood are examples of a change in what type of properties?
Chemical
What is an example of a pure substance?
Salt
A ___________ is a stable, uniform mixture of two or more mixable substances that is made by dissolving a solid, liquid, or gaseous substance in another substance.
Solution
Nail polish, with glitter that can separate from the polish, is an example of a(n)…
Suspension
Volatile organic compounds contain __________ and evaporate very easily.
Carbon
A(n) ____________ charged ion is called an anion.
Negatively
Nonaqueous solutions, such as alcohol or oil, do not have…
A pH
Oxidation and reduction always occur simultaneously and are referred to as a(n) ___________ reaction.
Redox
What type of chemical reaction requires the absorption of energy or heat from an external source for the reaction to actually occur?
Endothermic
The SDS contains ___________ categories of information.
16
A material that does not transmit electricity such as rubber or plastic coating.
Insulator
An apparatus that changes direct current to alternating current is a(n)…
Inverter
The unit that measures the pressure or fore that pushes the electric current forward through a conductor is a(n)…
Volt
Which unit measures the resistance of an electric current?
Ohm
The device that prevents excessive current from passing through a circuit is called a….
Fuse
A switch that automatically interrupts or shuts off an electric current at the first indication of an overload is a(n)….
Circuit breaker
The negative electrode of an electro therapy device is called a(n)…
Cathode
All of the electrical appliances you use should…
Be UL certified
Catalysts are substances that speed up ____________ reactions.
Chemical
What is an example of a good conductor?
Tap water
Anaphoresis __________.
Softens tissues
When should you seek medical care after an electrical shock?
If you are pregnant.
