When hydrogen gas is generated in a reaction, the proper chemical formula and state of matter written in a chemical equation to represent the hydrogen gas is
What is H2 (g.)
100
Name the 6 types of chemical reactions
What is synthesis, decomposition, single replacement, double replacement, acid-base, and combustion
100
When zinc granules are added to a solution of hydrochloric acid, ___________ were observed
What are bubbles
100
When converting moles to grams, or grams to moles, the _______________ of the compound must be calculated and then used for the conversion factor
What is the molecular weight
200
There are 6.02 x 10^23 atoms in 1 mole of a given atom or molecule. The number 6.02 x 10^23 is also known as
What is Avogadro's number
200
When a solute is dissolved in water, the proper way to represent its state of matter in a chemical equation is to write ______ after the chemical formula
What is (aq.)
200
The presence of this gas reactant will ensure that a combustion reaction will occur
What is O2
200
Dissolution is the process of _______________ a solute in a solvent, where the solid solute appears less visible with increased mixing
What is dissolving
200
What color is the copper (II) sulfate solution?
Blue
300
The number of moles in 2.55 grams of copper
What is 0.040 mol Cu?
Cu = 63.546 amu (g/mol)
2.55 g x (1 mol/63.546g) = 0.040 mol Cu
300
Fill in the blank: The ____________ on the left side of the arrow combines to YIELD the _________________ on the right side of the arrow
What is reactant(s), product(s)
300
In an acid-base reaction, double replacement occurs that will yield these two types of products
What is water and an ionic salt
300
Double Jeopardy!!
Will LiNO3 be soluble or insoluble in water?
300
The number of moles in 2.55 g copper
Cu = 63.546 amu or g/mol
What is 0.040 mol Cu?
Cu = 63.546 amu or g/mol
2.55 g x (1 mol/63.546 g) = 0.040 mol Cu
400
The MW of aluminum phosphate
Al = 25.982 amu
P = 30.974 amu
O = 16.000 amu
What is 120.956 g/moL
AlPO4
Al = 25.982 amu
P = 30.974 amu
O = 16.000 amu
400
DOUBLE JEOPARDY!!
Write 10 unique acid base reactions in less than 10 minutes
400
The three reaction types of the chemical reaction shown below:
HCH3CO2 + NaHCO3 → H2O + CO2 + Na CH3CO2
(acetic acid) + (sodium bicarbonate) --> (water) + (carbon dioxide) + (sodium acetate)
What is acid-base, double replacement, and decomposition reactions?
400
The solid that forms when two solutions are mixed together
What is a precipitate
400
The reaction of calcium chloride and copper (II) sulfate yielded calcium sulfate and copper (II) chloride and heat was given off this reaction. We can call this a(n) ______________ reaction to let others know that heat was given off and the temperature rose by approx. 5 degrees Celsius
What is an exothermic reaction
500
What is the percent composition of Na in NaOH?
Na: 22.990 amu
O: 16.000 amu
H: 1.008 amu
What is 57.48%
NaOH MW = 39.998 g/mol
22.990/39.998 x 100 = 57.48%
500
Balance the following equation:
__ HCl (aq.) + __ Zn (s.) → __ ZnCl2 (aq.) + __ H2 (g.)
What is __2_ HCl (aq.) + _1__ Zn (s.) → _1__ ZnCl2 (aq.) + __1_ H2 (g.)
500
The electrolysis of liquid water to generate hydrogen gas and oxygen gas is an example of this type of chemical reaction
What is decomposition
500
Describe the appearance of pure water at STP (standard temperature and pressure) in terms of its color, transparency, state of matter and presence of particulates
What is clear, colorless, liquid, no particulates
500
What is the solid precipitate formed in the reaction:
CaCl2 + CuSO4 --> CaSO4 + CuCl2