Chem 20 Sci 10 Review

Ions

100

What is the preferred ion charge for Sodium?

1+

200

What is the name for a positive ion?

Cation

300

What is the name for the following ion: Cr₂O₇^2-_(aq)?

Dichromate ion

400

What is the term for elements with multiple possible ion charges?

Multivalent

500

Which of the following elements has the same number of electrons as a chloride ion (Cl^1-)?

Argon atom

Periodic Table

100

What family of elements does Calcium belong to?

Akali Earth Metals

200

How many electrons does a neutral Lead atom have?

82

300

You have a sample of a dull, yellow element that does not conduct electricity. What class of element do you think it is?

Non-metal

400

How many neutrons does Thorium have?

142

500

Which metal is the only one that is liquid at room temperature? (Hint: It's toxic)

Mercury

Ionic Compounds

100

An ionic compound is made of what kinds of elements?

A metal & a non-metal

200

What is the name for the following compound: SrF₂?

Strontium Fluoride

300

How does the melting point of ionic compounds compare to molecular compounds?

Ionic is higher

400

What is the chemical formula for Indium Oxide?

In₂O₃

500

You have an sample on an unknown ionic compound and place it in water. What do you expect to happen?

It will dissolve

Molecular Compounds

100

A molecular compound is a combination of what kinds of elements?

2 Non-metals

200

What is the name of the following compound: CBr₄

Carbon Tetrabromide

300

The electrons of molecular compounds are _________ between each atom?

Shared

400

What is the chemical formula for the following compound: Tetraphosphorous Decaoxide?

P₄O₁₀

500

You have a sample of carbon tetrachloride. What would happen if a conductivity meter was placed into the sample?

It would not conduct

Acids & Bases

100

If you tasted a sample of acetic acid, how would you expect it to taste?

Sour

200

What polyatomic Ion is found in all bases?

Hydroxide (OH-) Ion

300

An unknown sample turned all litmus paper blue. What kind of compound is it?

A base

400

A low pH is indicative of what type of solution?

Acid

500

What is the name for the H₂CO_3(aq) dissolved in water?

Carbonic acid

Reaction Types

100

The reaction type the breaks something down into simpler elements 

Decomposition

200

A car's gasoline engine uses what type of reaction to generate power?

Combustion

300

What type of reaction uses only elements as reactants?

Formation

400

What is the following reaction?

HCl_(aq) + Ca(OH)_2(aq)  ->   H₂O_(l) + CaCl_2(aq)

Double Replacement (Or Neutralization)

500

You mixed Potassium metal with some solid Sodium Chloride. A visible reaction occurred. What reaction type was it?

Single Replacement