Chemistry Mid-Unit Review

Atoms and Ions

100

This subatomic particle indicates an elements atomic number. 

What is the Proton?

200

This scientist developed the concept of electron energy levels.

Who is Niels Bohr?

300

Elements referred to as METALS do what with electrons to become which type of Ion?

What is Lose Electrons to become Cations?

400

The provided bohr diagram represents which atom?

What is Magnesium?

500

Which of the following Ions has the correct charge?

N^2-             Cd²⁺                  K⁴⁺                 Se^3-

And what is the elements name?

What is the Cadmium Ion, Cd²⁺ 

Chemical Change

100

Is observing evidence of a chemical change DIRECT or INDIRECT evidence?

What is INDIRECT?

200

Water is placed in a cooler and freezes. Is this a PHYSICAL or CHEMICAL change?

What is Physical change?

300

A metal is placed within an acidic solution and bubbling is observed. What type of change is this?

What is Chemical Change?

400

Two colourless solutions are mixed together and produce a white material. What is this material called and what type of change is represented?

What is Precipitate and chemical change?

500

When flint and steel are rubbed together a spark is produced which can ignite to become fire. Is a chemical change occurring and why?

Yes, because light and heat is being produced. 

Naming Compounds

100

This lowercase letter in brackets included at the end of all chemical formulas indicates what?

What is state of matter?

200

Which of these non-metals DOES NOT form a polyatomic atom?

Oxygen        Iodine            Neon          Sulfur 

What is Neon?

300

State the names of these molecular compounds

P₂Cl₅ 

C₃H_{8 (g)}

What is diphosphorus pentachloride and Propane?

400

State the formulas for these chemical compounds

Nickel (II) chloride

Fluorine trioxide

What is NiCl_{2 (s)} and FO₃

500

State the chemical formula for this chemical compound.

Ammonium Carbonate

What is (NH₄)₂CO_{3 (s)}?

Properties of Ionic and Molecular

100

Ionic compounds will always form compounds in this state of matter.

What is Solid?

200

This type of compound forms a non-conductive solution with water.

What is molecular

300

While mixing a solid compound and water, an orange solution is produced. This indicates which type of compound?

What is Ionic?

400

When Ions bond in an Ionic compound, what is happening to the electrons?

Transferring from cation to anion.

500

Molecular compounds contain which group(s) of elements?

What is Non-metals?

Acids and Bases

100

Acids and Bases have distinct tastes. What are these respective tastes?

What is Sour (acid) and Bitter (base)?

200

This Ion group is used to identify most bases. 

What is Hydroxide (OH^-)?

300

All acids and bases require the same state of matter. Identify it

what is aqueous (aq)?

400

This compound is the one exception to the standard for identifying bases. Identify the compound and its formula

What is Ammonia (NH_3 (aq))?

500

Identify the acids

H₃PO_{4 (aq)}       NaOH_(aq)     HCl_(g)       CH₃COOH_(aq)

What are H₃PO_{4 (aq)}  and CH₃COOH_(aq)