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Chemistry

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Jude Beatty

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Cards in this guide (17)
In a series circuit the adds up over all the resistors

voltage

Maxwell a Russian scientist created an early periodic table of elements

false

How do you fix a horn for a 1978 Chevy Nova

Apply 12 volts directly to the horn an if it blows it is good. If not it is bad. Check the fuse for the horn. Check the horn relay. Check the horn button in the steering wheel. Check all wiring and the ground connection.

Charges repel each other

____________ charges repel each other.



like

Atoms with a low ionization energy hold tight to their outer valence electrons

No; the phrase given characterizes high rather than low ionization.

When charging an object by conduction what happens to the charges in the object

Electrons move onto the object, giving it a static charge.

Apex ;)

How does rubbing one object on another create static electricity

the electrons get ripped off one object and held by the other

The rubbing moves electrons to the object that holds them more tightly.

Who listed the elements in a table accourding to their atomic masses

Mandeleev who predicted periodic table.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground

No. Touching a live electric current is never a good idea.

A 120 V power supply connected to a 30 ohm resistor will produce how many amps of current

A 120V power supply connected to a 30 Ohm resistor will produce 120/30 or 4 amps of current.

Which of the following are good conductors under normal conditions water plastic a penny copper wire a dime or aluminum foil

aluminum foil, dime, coper wire, penny, water

Which one of the following is a common acid soap aspirin antacid and washing soda

Aspirin

Which of the following are good safety measures during a thunderstorm (Apex)

Do not use any equipment that plugs into a wall outlet

Go inside a closed building

Which one of the following is a balanced equation

2NH3(g) + 3Mg(s) —> 3H2(g) + Mg3N2(s)

The change that takes place when two or more substances what to form new substances is called a chemical reaction

(Apex) interact

If lmn xyz which congruences are true by cpctc check all that apply.

ML=YZ ,

Electrons are the smallest particle of an element that retains the original characteristics of the element

False

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