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Chemistry

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Kayleigh Waelchi

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Cards in this guide (16)
What is a base

In chemistry, a base is the opposite of an acid. It has a pH higher than 7. When mixed with an acid it forms a neutral solution with a pH of 7.

acid + base = water + salt.

properties include: bitterness, slimy or soapy, and turns litmus paper blue.

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A base is also an article on which something stands or a military installation.

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In sports, a base is one of four plaques fixed to the ground (or other object designated for this function) that must be touched by a runner, without being touched by the ball that is in play, before he or she can score a point in the game.
Base: a substance which when added to water produces hydroxide ions [OH-].

Base Properties: When dissolved in water, bases Conduct electricity Change red litmus to blue Have a slippery feeling React with acids to neutralize their properties."

What does equilibrium mean

Total amounts of products and reactants are not changing.-- Apex

Which of the following is a strong acid

HCI (Hydrochloric acid)

What happens at the triple point of water

Solid, liquid, and gas exist together.

Apex

What kind of fraction has a value less than 1

1/2 is less than one.

What is true if a liquid and a gas are in equilibrium

liquid molecules forming a gas and gas molecule forming a liquid are equal in number

How does temperature affect the Keq of a reaction

Changing the temperature will change Keq. (apex.)

What do many bases have in common

they often form hydroxide ions

What does not describe the process the wright brothers used to create the first airplane

The wright brothers figured out how to outfit the plane with wings that flapped, similar to birds' wings. - Apex- Chemistry Semester 2.

What is the equilibrium constant of a reaction

It is the ratio of the concentrations of products to the concentrations of reactants.

What will happen when a reactant is added to a system at equilibrium

The equilibrium of the system will be upset.

According to Le Chatelier principle what happens if heat is added to a system

The reaction shifts to remove the heat APEX

What is molality of a solution

It is the number of moles of solute in 1 kg of solvent.

What of the following is a characteristic of a weak acid

It does not dissociate completely in water

which of the following is an example of an Arrhenius acid

HI

Which of the following is an electrolyte solution

The answer is "Ions in water" on Apex

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