ATO Test 1
Matter - ANSWER-Composed of large numbers of tiny particles called molecules
Mixtures - ANSWER-Two or more molecules or elements are grouped together, and each molecule maintains chemical identity.
Protons - ANSWER-positively charged particles inside the nucleus
Neutron - ANSWER-a neutral particle in the nucleus of an atom
Electron - ANSWER-negatively charged particle; located outside the atomic nucleus
Valence Electrons - ANSWER-Electrons on the outermost energy level of an atom
An arc burn on the skin is also known as - ANSWER-Flash burn
Three types of burns - ANSWER-Arc Burn , Electrical Burn, Thermal Burn
Electrical Accident Factors - ANSWER-Unsafe equipment/installation Workplace made unsafe by environment Unsafe work practice
Electrical Accidents Procedures - ANSWER-Turn off power/ remove victim from circuit Administer CPR
Personal Protection - ANSWER-Insulation Guarding unsafe/hardzarous space Grounding Safe work practices
Electrical Shock - ANSWER-when electrical current passes through the body
Electrical Current - ANSWER-movement or flow of electrons
Severity of electrical shock depends on: - ANSWER-Amount of current
Path of current Amount of time
High voltage is typically - ANSWER-115VAC or more
Electrical Burns - ANSWER-Burns caused by electrical current flowing through the body tissues and bones. 1 / 2
Arc Burns - ANSWER-Caused by electrical energy traveling from an area of high resistance to an area of low resistance.
Protective Devices - ANSWER-Fuse and Circuit breaker
Atom - ANSWER-Smallest particle of an element that retains the characteristics of that element.
Atoms join together to make - ANSWER-Molecules
Element - ANSWER-One of more than 100 known substances that cannot be divided into simpler substances by chemical means
Molecule - ANSWER-Smallest particle into which a substance can theoretically be divided and maintain its chemical properties.
Atomic Number - ANSWER-Number of protons in the nucleus
Electrons reside in groups of orbits called - ANSWER-Shells
Valence shell - ANSWER-outermost electron shell
Valance - ANSWER-a number that represents the extent to whcih an atom is able to combine directly with other atoms
Max number of electrons in a shell - ANSWER-8
Conductors - ANSWER-Substances that permit free motion of a large number of electrons
Insulator - ANSWER-substances that contain no free electrons
Semiconductor - ANSWER-Substances that are neither good conductors nor good insulators
Ionization - ANSWER-Process by which an atom loses or gains electrons
Negative Ion - ANSWER-Atom that has more than its normal number of electrons
Positive Ion - ANSWER-Atom with less than its normal number of electrons
Law of Electrostatics - ANSWER-Law that states like charges repel and unlike charges attract.
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