Matter
Thermochemistry
The Atom
Reactions
Stoichiometry
100

A pure element contains this many types of atoms.

What is one?

100

As the temperature of a gas increases, this happens to the volume of the gas.

What is increases/goes up?

100

An isotope has a different number of this subparticle.

What is a neutron?

100

C4H8+6O2→4CO2+4H2O is this type of reaction.

What is combustion?

100

There are this many particles in 0.5 moles of a substance.

What is 3.011 x 1023 particles?

200

Water boiling into vapor is an example of this type of change.

What is a physical change?

200

This stays the same when a substance is changing state of matter.

What is temperature?

200

The valence electrons of transition metals occupy this letter block.

What is D block?

200
Cl2+2NaBr→2NaCl+Bris this type of reaction.

What is single replacement?

200

There are this many liters of gas in 38.0 grams of fluorine gas.

What is 22.4 liters?

300

This substance is not pure but has a uniform composition.

What is a homogeneous mixture?

300

This is where a substance can exist as a solid, liquid and gas at the same time.

What is the triple point?

300

A tin ion that has 46 electrons would have this charge.

What is +4?

300

Balance the equation: __ P4O10 + __ H2O → __ H3PO4 

What is P4O10 + 6 H2O → 4 H3PO4?

300

Carbon disulfide is this percent sulfur by mass.

What is 82%?

400

0.52040 has this many significant digits.

What is five?
400

A sample of gas occupies 4.0 L at a pressure of 2.0 atm. If the pressure decreases to 1.0 atm, this will be the new volume of the gas.

What is 8.0 L?

400

This is why lithium has a larger atomic radius than fluorine despite having a smaller atomic number.

What is a stronger nuclear pull/electrons occupy the same energy level?

400

These are the products when decomposing calcium carbonate.

What are calcium oxide (CaO) and carbon dioxide (CO2)?

400

The empirical formula for a substance with 57.1% carbon, 4.8% hydrogen and 38.1% sulfur.

What is C4H4S?

500

You have a rock with a mass of 4.2 grams and a volume of 2.8 g/mL. What is the rock's density?

1.5 g/mL

500

15.00 grams of water are heated from 10.00°C to 70.00°C. The specific heat of water is 4.180 J/g°C. This much energy is required to heat up the water.

What is 3762 J?

500

The noble gas configuration for chromium.

What is [Ar] 3d⁵ 4s¹?

500

These are the products when combining copper metal and aluminum nitrate.

What is there is no reaction?

500

Given the reaction 2Al+3CuCl2→2AlCl3+3Cu, this is the number of grams of copper formed if you start with 27 grams of aluminum.

What is 95.3 grams?