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Periodic Table
Electrons
Bonding
Chemical Reactions
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100

Which element has 7 protons?

Nitrogen

100

How many electrons would a neutral atom of phosphorus have?

15

100

What is the name for the type of bond where electrons are SHARED between two or more atoms?

Covalent

100

The law of conservation of mass states that the mass of the products must be equal to what?

The mass of the reactants

100

A solution is made of two parts: The solute and the _________ 

Solvent

200
How many neutrons would an atom of Sodium-25 have?

14

200

Are high energy electrons found close to the nucleus or further from the nucleus?

Further

200

What type of charge does an anion have?

Negative

200

What TYPE of reaction is the following reaction: 

CuCO3  →  CuO  +  CO2

Decomposition

200
Describe what an ionic compound when do when dissolved into solution?

It will deionize; It will break up into individual ions (cations and anions)

300

Which halogen is found in the 4th period?

Bromine (Br)

300

Which element on the periodic table is the most electronegative?

Fluorine

300

What is the name of the electrons used to form bonds between atoms?

Valence electrons

300

Balance the following equation: H2 + O2 -> H2O

2 H2 + O2 -> 2 H2O

300

What is one way someone can increase the solubility of a GAS into a liquid?

Increase pressure or decrease temperature

400

What is the only gas in the first group?

Hydrogen (H)

400

How many electrons would a nitrogen atom need to have a -2 charge?

9

400

Is KBr an ionic compound or a covalent compound?

Ionic

400

Predict if the following single displacement reaction will occur by using the activity series. If it will occur, what will the products be? (If it can not occur, write "No Reaction)

NaF + Ca -->

Yes; CaF2 + Na

400

What is the molarity of a solution where 0.3 moles of solute are in 250 mL of solution?

1.2 Molar

500

Name an element that is considered a metalloid

Boron, silicon, germanium, polonium, tellurium, antimony, or arsenic.

500

Which two elements can only have up to 2 electrons in their outermost shell after forming an ion?

Hydrogen and Helium (H and He)

500

What is the name of a covalent compound made from one phosphorus and five chlorine atoms bonded to one another? (PCL5)

Phosphorus pentachloride

500

Balance the following equation: Fe + O2 -> Fe2O3

4 Fe + 3 O2 -> 2 Fe2O3

500

What is the molarity of a solution where 278 grams of CaCO3 are dissolved in 4.18 liters of solution? (Answer in 3 sig figs)

0.665 Molar