Chemistry Lab 5

Group 1 of the periodic table of elements includes alkali metals that readily form ions with a _____ charge.

+1

A bromide ion has a charge of _____.

-1

How might a scientist identify the anion of an unknown substance?

Perform a series of reactions with known substances and compare these to reactions with the unknown.

How might a scientist identify the cation of an unknown substance?

Perform flame tests.

A double displacement reaction can generate products, including a precipitate, a gas, or a salt and water.

True

An effective way to identify the anion and cation of an unknown ionic compound is to perfom confirmation tests using both flame tests and known reactions.

True

When NaI and AgNO3 are mixed, _____.

a reaction occurs, as indicated by a precipitate

In the compound NaCl, chlorine is the _____

anion

In an ionic compound, the _____ is listed first, followed by the _____.

cation; anion

When an element _____ one or more electrons, it becomes a negatively charged particle called a(n) _____.

gains; anion