Atom Parts
The PT
Ions
Ionic Compounds
Molecular Compounds
100

What number do you use to find the number of protons?

atomic number

100

What are the elements in group 18 called?

Noble Gases

100

What is an ion?

a charged atom


100

C-14 has how many neutrons?

8

100

Molecular compounds for between these elements.

Nonmetals

200

These make up the mass of an atom.

neutrons and protons

200

What happens to the reactivity in water of the Alkali metals?

It increases as you move down the column.

200

What elements form ionic compounds?

metal and nonmetal

200

A positive ion is known as a ...?

Cation

200

The prefix for 5.

penta

300

What does neutral mean?

No charge, equal protons and electrons.

300

What did Mendeleev use to arrange elements in the periodic table?

Properties (physical and chemical)

300

A negative ion

anion

300

Write the formula for aluminum hydroxide.

Al(OH)3

300

Name this: SO3

sulfur trioxide

500

Describe valence electrons.

Electrons in the outermost energy level, or shell.

500

What does the 2nd digit of the column number correspond to?

The number of valence electrons.

500

What happens between cations and anions?

They attract

500
Name this: FeSO4

iron(ll) sulfate

500

Describe a single bond.

Sharing 2 electrons.

600

What is an isotope?

An atom with the same number of protons but different number of neutrons. 

600

Explain why Mg forms a 2+ ion.

  It loses its 2 valence electrons to become stable. 

600

List three major properties of ionic compounds.

brittle

high melting point

soluble


600

Write the formula for copper(ll) chlorite hexahydrate

Cu(ClO2)2 . 6H2O

600

Write the name of CCl4

carbon tetrachloride

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