Midterm Review

Atomic Concepts and Bonding

100

The two subatomic particles with the same mass

What is a proton and a neutron?

200

Charge of a Copper ion that lost two electrons 

What is positive two?

300

The reason that Magnesium and Calcium have similar chemical properties.

What is same number of valence electrons?

400

One difference between an atom of O-16 and an atom of O-18

What is different mass number, different number of neutrons?

Matter and Energy

100

The kind of substance that cannot be broken down by a chemical change

What is an element?

200

Classify air as a substance or a mixture.

What is a mixture?

300

The name of any phase change where potential energy decreases.

What is deposition, condensation, or freezing?

400

The specific heat of a substance if 45 J of heat are absorbed when a 15 g sample increases its temperature by 20^oC. 

What is 0.15? 

Naming and Equations

100

Which type of bonding is in a substance if it has a high melting point and conducts electricity as a solid or aqueous solution?

What is ionic compound? 

200

The chemical formula for Calcium Oxide

What is CaO?

300

Draw a dot diagram for Na₂O.

What is ...?

400

The molecular formula of a compound with a molar mass of 150 g and an empirical formula of CH₂O.

What is C₅H₁₀O₅?

Gases and Bonding

100

Name one idea from the Kinetic Molecular Theory.

What is no attractive forces, small sizes, constant motion, or energy transfers?

200

The way volume changes when the temperature of a gas is doubled at a constant pressure.

What is doubles? 

300

What happens to electrons when Calcium bonds to Oxygen.

What is electrons are transferred?

400

The percent composition by mass of Oxygen in C₆H₁₂O₆ (gram-formula mass = 180 g/mol). 

What is 53%?