Properties & States of Matter
Bonding & Intermolecular Forces
Atomic Structure & Nuclear Chemistry
Chemical Reactions
Moles & Stoichiometry
100
Is boiling point an intensive or extensive property? Explain why.
Intensive
100
What type of bond forms when electrons are transferred from one atom to another?
Ionic bond
100
What charge will sulfur have?
-2
100
When potassium chlorate (KClO₃) is heated, it forms potassium chloride (KCl) and oxygen gas (O₂). What type of chemical reaction is this?
Decomposition
100
How many molecules of H2O are in 2 moles of H2O?
1.204 x 1024
200
Which state of matter has a definite volume but no definite shape?
Liquid
200
Write the formula for calcium chloride.
CaCl2
200
Why do elements in the same group of the periodic table often have similar chemical properties?
Same number of valence electrons
200
Magnesium and Oxygen react with each other. What type of reaction is this?
Synthesis
200
What is the molar mass of calcium carbonate (CaCO₃)?
100.09 g/mol
300
A puddle disappears from a sidewalk on a sunny day. What phase change has occurred?
Evaporation
300
Name the following compound: P4Br7
Tetraphosphorus heptabromide
300
Draw the Bohr diagram for Phosphorus
300
A zinc metal strip is placed into a solution of copper(II) sulfate. Zinc replaces copper in the compound. What type of reaction is this?
Single replacement
300
How many moles are in 80.0 g of CO2?
1.82 moles
400
Two liquids (Liquid A and Liquid B) have the same volume, but Liquid A has twice the mass of Liquid B. Which liquid has the greater density?
Liquid A
400
Write the formula for Magnesium Phosphate
Mg3(PO4)2
400
How many single bonds can oxygen form?
2
400
Balance this reaction: Fe+O2→Fe2O3
4Fe+3O2→2Fe2O3
400
If 2 moles of H₂ react completely with 1 mole of O₂, how many moles of H₂O are produced?
2 moles of H2O
500
What type of structure do ionic compounds form?
Crystalline lattice
500
A scientist compares methane (CH₄) and water (H₂O). Which will have a higher boiling point and why?
H2O will have a higher boiling point, because it experiences all three IMFs. CH4 only experiences LDFs.
500
Draw the Lewis structure for C2H4
500
Predict the products when calcium chloride (CaCl2) reacts with sodium hydroxide (NaOH).
Ca(OH)2 + NaCl
500
How many grams are in 3.5 moles of CaCl2?
388.43 g