A sample of pure water is neutral because it contains

equal amounts of hydroxide and hydrogen ions.

In a water solution, how do acids differ from bases?

Acids form hydrogen ions(H + ), while bases form hydroxide ions (OH - )

Acids turn litmus blue, while bases turn litmus red.

Acids form salts, but bases do not.

Hydrogen ions (H + )remain dissolved, by hydroxide ions (OH - ) do not.

Water is called the "universal solvent" because:

It is able to dissolve many different solutes

It dissolves only a few solutes

It is found everywhere in the universe

How can a scientist safely tell whether an unknown solution is salt in water or sugar in water?

By testing the electrical conductivity of the solution

Acids, Bases, and the pH Scale Practice

Chemistry

7th Grade

NGSS covered

Used 541+ times

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

In a neutralization reaction, what are the products of a reaction between an acid and a base?

Another acid and base

Carbon dioxide and a salt

Water and a salt

Either two acids or two bases

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Tastes bitter.

Acids

Bases

Salts

All

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Tastes Sour

Acids

Bases

Salts

All

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Feels slippery.

Acids

Bases

All

Forms hydroxide ions in water

Acids

Bases

All

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

pH less than 7.

Acids

Bases

All

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

pH greater than 7.

Acids

Bases

All

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Acids, Bases, and the pH Scale Practice

In a neutralization reaction, what are the products of a reaction between an acid and a base?

Tastes bitter.

Tastes Sour

Feels slippery.

Forms hydroxide ions in water

pH less than 7.

pH greater than 7.

What is a solution that has an excess of hydroxide (OH-) ions?

Acids are found on the pH scale between which numbers?

An acid/base reaction always produces:

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