SNC2D/E Chemistry Review (Cruz)

General Chemistry

100

What is the difference between a physical and a chemical change?

A physical change does not involve the formation of a new substance

200

What is the name for the "inert" elements in group 18?

The nobles gases

300

What is a precipitate?

A solid that forms in a solution after a chemical reaction

400

What kind of elements lose electrons to become cations?

Metals

500

List all the diatomic molecule using formulas (with states)

Hydrogen H_2(g)

Oxygen O_2(g)

Fluorine F_2(g)

Bromine Br_2(l)

Iodine I_2(g)

Nitrogen N_2(g)

Chlorine

Ionic or molecular?

100

NaCl

(What's the formula?)

Ionic

sodium chloride

200

CO

(What's the formula?)

Molecular 

carbon monoxide

300

P₂O₃

_{(What's the formula?)}

Molecular

diphosphorus trioxide

400

PbSO₄

(What's the formula?)

ionic

lead (II) sulfate OR plumbous sulfate

500

Al₂O₃

(What's the formula?)

Ionic

aluminum oxide

Balancing!

100

H₂ + O₂ →  H₂O

(Balance and include states you know)

2 H₂ + O₂ → 2 H₂O

200

Zn + HCl → H₂ + ZnCl₂

(Balance and include states you know)

Zn_(s) + 2 HCl_(aq) → H_2(g) + ZnCl₂

300

Fe₂O₃ + C →  Fe + CO₂

(Balance and include states you know)

2 Fe₂O₃ + 3 C →  4 Fe_(s) + 3 CO_2(g)

400

C₂H₆ + O₂ → CO₂ + H₂O

(Balance and include states you know)

2 C₂H_6(g) + 7 O_2(g) → 4 CO_2(g) + 6 H₂O_(l)

500

H₃PO₄ + NaOH → Na₃PO₄ + H₂O

(Balance and include states you know)

H₃PO_4(aq) + 3 NaOH_(aq) → Na₃PO_4(aq) + 3 H₂O_(l)

Reaction Types

100

Which type of reaction does AB →  A + B represent?

Decomposition

200

zinc + sulfur → zinc sulfide represents what type of reaction?

synthesis

300

AgNO₃ + Cu →  Ag + Cu(NO₃)₂ is what type of reaction?

Balance it afterwards.

For 2DE: How do you know this reaction goes through?

Single displacement

2 AgNO₃ + Cu →  2 Ag + Cu(NO₃)₂

400

lead (II) nitrate + potassium iodide → lead (II) iodide + potassium nitrate is what type of reaction?

After, write the balance chemical equation.

For 2DE: how do you know that this reaction goes through?

double displacement

Pb(NO₃)_2(aq) + KI_(aq) →  PbI_2(s) + KNO_3(aq)

500

hydroiodic acid + calcium hydroxide → ___?

What type of reaction is this? 

For 2D: What will the products be FOR SURE?

For 2DE: Write the balanced chemical equation.

Neutralization

Water and salt!

2 HI_(aq) + Ca(OH)_2(aq) → 2 H₂O_(l) + CaI_2(s)

Acids and Bases

100

A substance with a pH of 6 is an...

acid

200

If a substance turns red litmus paper to blue, it is a(n)...

base

300

What substance is used to determine the pH?

indicator

400

What are the products of sulfuric acid and magnesium hydroxide?

magnesium sulfate and water

500

What are the two compounds responsible for acid precipiation?

Nitric and sulfuric acid