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Flashcards in Formulae and Equations Deck (15):
1

What is meant by a binary compound?

This is a compound that contains two elements only.

2

What type of element can form several ions with different charges?

Some metals, mostly transition ones.

3

The atoms on which side of the periodic table lose electrons to form cations?

The left.

4

What type of atom gains electrons to form anions?

Non-metal atoms.

5

How do you name binary compounds?

Use the name of the first element but change the ending of the second element's name to -ide.

6

In what type of compound does the metal ion always come first?

Ionic compounds.

7

What is a polyatomic ion?

This is an ion that contains atoms of more than one element bonded together.

8

Give an example of a polyatomic ion.

OH-
NH4+

9

What is the overall charge of a formula?

0

10

When are brackets used?

If there is more than one polyatomic ion.

11

What is meant by the term "diatomic molecule"?

This is a molecule containing two atoms of the same element bonded together.

12

List the diatomic molecules (7)

H2, N2, O2, F2, Cl2,Br2, I2

13

What other element is found as a small molecule?

P4

14

Do covalent compounds contain ions?

No

15

What do most covalent molecules exist as?

Molecules with a small number of atoms bonded together.