Test 3 Review

How many atoms are in Na(NH₃)₂

In a chemical equation, the reactants are on the __ side and the products are on the __ side.

Isotopes of an element have the same number of __ but a different number of __.

A positive ion is formed when an atom. . .

Who discovered the electron?

Which statement does not describe Bohr's Theory?

What is the correct name for this: HgO?

What is the most important factor in determining chemical behavior of an atom?

How many atoms at most can the outer shell of an atom have?

What is used to predict the probable paths of electrons in an atom?

An electron that moves from shell to another does what?

A negative ion has fewer what than electrons?

T or F: in an ionic compound, the metal is written first

What type of compound forms when a group IIA element reacts with a group VIIA element?

Element M forms a stable compound MCl_2. If it reacted w/ other elements from column 17,it would

A chemical bond that involves somewhat unequal sharing of electrons is called

T or F: the maximum number of electrons allowed in each shell of an atom is the same.

Is sodium a reactive metal?

Elements in the same what of the periodic table exhibit similar chemical properties?

Give the chemical formula for carbon tetrabromide.

T or F: The number of atoms on each side of an equation is the same

What is a pure substance that can't be broken down into anything simpler by chemical processes?

A chemical equation is balanced by changing

What is the smallest unit of a compound?

What happens in the formation of an ionic bond?

Properties of alkali metals:

What is the smallest unit of an element?

T or F: Protons and neutrons have about the same mass.

Making new or breaking old chemical bonds in a molecule may include:

Atoms with 8 valence electrons tend to be

Neutral atoms of a given element all have the same what?

"Atom" was first applied to the smallest particle of matter by whom?

How do electrons fill the shells of an atom?

What number in an element is the total number of protons in the nucleus?

In what kind of molecule do atoms share one or more pairs of electrons?

Properties of a compound:

Which elements cannot form double bonds?

When do ionic compounds form?