Got my Ion you
How does an S-2 ion differ from an electrically neutral sulfur atom?
number of electrons
If two oxygen atoms combine to make a molecule, how many bonds will they form?
Double
Whats the energy is needed to raise the temp of 20 g of water from 30C to 170C?
How many steps would be needed to calculate the energy transfer in the following phase change?
3 steps
What is the trend for atomic radius down a group?
increases
Most reactive non-metal on the periodic table
How many electrons are in a Cu+2
27
What is the name of the compound with the chemical formula CrCl3
Chromium (III) chloride
When combined, two gases have a pressure of 4.0 atm. If one gas has a pressure of 1.5 atm, what is the pressure of the second gas?
2.5 atm
What is the trend for electronegativity as you go down a group?
decreases
Most reactive Metal on the Periodic Table
Francium
What kind of bond holds magnesium and chlorine together?
Ionic Bond
What is the name of MgI2?
magnesium iodide
To increase the temperature of 100.0 g of water from -50C to -10 C how much energy is required?
8.20 x 103 J
Which element Cl, P or Al has the highest electronegativity?
Cl
Dull, brittle, not good conductors
Which of the following elements have the same number of neutrons?
105 B 126C 5525Mn 19779Au 5626Fe
5525Mn 5626Fe
What is the molecular geometry of CO2?
linear
A gas under a pressure of 74 mmHg and at a temp of 75C occupies a 500.0 L container. How many moles of gas are in the container?
1.7 moles
Which element has the larger ionization energy?
Cs, Kr, or N
Kr
How did Mendeleev arrange the first periodic table?
by atomic mass
arrange the following particles in order by decreasing mass....
beta, alpha, neutron
alpha, neutron, beta
What is the correct name for PbO2?
Lead (IV) oxide
How much energy is needed to raise the temp of 15 g of water from -60˚C to 85˚C
12000 J
Which has the largest atomic radius:
magnesium, silicon, sulfur or sodium?
Sodium
Who's responsible for arranging the current periodic table in order of increasing atomic number
Mosely