Reactions
What reaction is this?
2H₂ + O₂ → 2H₂O
synthesis
What is an atom?
The smallest unit of an element that retains the same chemical properties of that element and can exist as a separate particle.
How many significant figures are in the measurement 0.00450 g?
3 sig. figs.
What does the atomic number equal?
It's equal to the number of protons in the nucleus of an element
What state of matter has a definite shape and a definite volume?
Solids
What reaction is this?
2KClO₃ → 2KCl + 3O₂
Decomposition
What is a compound?
Two or more elements that come together to form something new
Round 78.249 to 3 significant figures.
78.2
Which group on the periodic table contains elements that are all noble gases?
What is the specific heat capacity of water?
4.18 J/g*k
What reaction is this?
CH₄ + 2O₂ → CO₂ + 2H₂O
combustion
What is a supersaturated solution?
A solution that cannot hold anymore solute
Round 0.009876 to 4 significant figures.
0.009876
What a metalloid?
An element that has both properties of metals and non-metals
What reaction is this?
2Al(s) + 3Pb(NO₃)₂(aq) → 2Al(NO₃)₃(aq) + 3Pb(s)
Single Replacement
Is this a double replacement?
Zn + 2HCl → ZnCl₂ + H₂
False
What is a half-life?
The time required for a half sample to decay.
Calculate 3.22 × 0.051 and report the answer with the correct number of significant figures.
0.16
What are the four periodic table blocks?
S, P, D, F
Solve and give the correct number of significant figures (8.445−2.13)/0.00450
1404.4
What reaction is this?
AgNO₃ + NaCl → AgCl + NaNO₃
Double replacement
What is the symbol for molarity?
The capital or big M
Add the following and express the final answer with correct significant figures: 145.20 + 0.003 + 2.6
147.8
Which directions does electronegativity grow?
Right and up
Between sulfur and chlorine, which has the higher electron affinity?
Chlorine has the higher electron affinity