Unit 1
How many protons are present in a sulfur atom?
16
How many valence electrons are in Selenium?
6
Which state of matter has the strongest forces of attraction?
Solid!!
What type of reaction is the following: Fe₂O₃ + 2Al → Al₂O₃ + 2Fe.
Single Replacement
Why does increasing the concentration of a reactant increase the rate of a reaction?
What is the most likely charge on a Sulfur ion??
2- or -2
Draw the lewis structure of Fluorine
A fluorine surrounded by 7 dots -- Google Fluorine Lewis Dot Structure for an image!
Which state of matter is moving the fastest?
Gas
What type of reaction is the following:CH4 + 2O2 -> CO2 + 2H2O
Combustion
What happens to particle movement as the temperature is decreased? IE why did glowsticks stop glowing in the icy water?
The particles moved slower and collided less frequently and with less energy; slowing down the reaction
How many neutrons does Boron-12 have?
7 neutrons
What is the atomic number of the element with the following Lewis Structure: 1s²2s²2p⁶3s²3p⁶4s1
19
What type of intramolecular force is between Bromine and Bromine in Br2? (Difference in electronegativity is 0)
nonpolar covalent
What is the molar mass of H2O?
18.02 g/mol
What percentage of K2O is K?
83ish %
How many electrons are in Be2+?
2 electrons!
What element is the following: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p5
Bromine!
What types of intermolecular forces are between molecules of NH3 (ED = 0.7)
LDF and Hydrogen Bonding
How many grams are in 0.75 moles of Br2?
119.86 g/mol
Using the balanced equation below, determine how many moles of H3PO4 are produced when 5.0 moles of P4O10 react?
P4O10(s) + 6 H2O (l) → 4 H3PO4(aq)
20 moles!!
How many neutrons and electrons are in Fluroine-20 with a charge of -1?
11 neutrons and 10 electrons
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³: How many valence electrons did the electron configuration above have?
5
Molecules with stronger intermolecular forces typically have (higher/lower) boiling points.
higher
How many moles are in 0.75 grams of He?
0.19 moles
Using the following balanced equation, determine how many grams of Cl2 are needed to react with 32 grams of K?
2K + Cl2 → 2KCl
29ish Grams of Cl2