Ch. 9 Review

The noble gases rarely react with other elements and are called stable elements.

Which is an example of a emulsion mixture?

Which is NOT true about nonmetals?

Which statement about chemical bonds is true?

How would you separate a solution of salt water so that ONLY the salt is left?

The way our ideas about atoms has changed is an example of how scientific theories change.

Which is NOT true about metals?

The amount of mass in a given amount of space is called the _________ of an object.

Blue & red litmus paper are dipped in mix #1, 2, & 3. In #3, the red paper turns blue. Is it an acid, base, or neither?

Blue & red litmus paper are dipped in mix #1, 2, & 3. In #1, the blue paper turns red. Is it an acid, base, or neither?

Which is true of atoms of the same element?

Scientists share their results so other scientists can build on their knowledge.

The amount of matter in an object is the object's ________.

A positively charged particle in an atom's nucleus is a(n) ________.

Which is an example of a colloid mixture?

Which formula shows how to find an object's density?

A chemical combination of two or more elements is a(n) _______.

The term _________ describes a reaction that absorbs heat.

A replacement reaction takes place when ...

The noble gases are the elements that make up the first column of the Periodic Table.

A group of bonded atoms that acts like a single particle make a(n) _________.

The Periodic Table is organized ...

A ________ is a mixture that contains undissolved particles that stay mixed in another substance.

Which of the following is NOT a type of mixture?

Blue & red litmus paper are dipped in mix #1, 2, & 3. In #2, no changes occur. Is it an acid, base, or neither?

The amount of space an object takes up is the object's ________.

Atomic particles that have a negative charge are called ________.

Which is an example of a suspension mixture?

The term _________ describes a reaction that gives off heat.

A ________ is a mixture made of parts that separate if left to stand.

A ________ is a mixture that is a suspension of two liquids that usually do NOT mix together.

An electrically charged particle with unequal numbers of protons and electrons is a(n) _______.