1
How many significant figures does 30 have?
1
If I cut a piece a paper in half, what type of change occured?
Physical
If you break a piece of lab equipment - who should you tell first
me
How many significant figures does 101 have
3
If an odor is emitted after mixing two substances, what type of change occured?
Chemical
What group number is argon in?
18
When an atom gains an electron it becomes negative - what type of ion is that?
How many valence electrons does sulfur have?
6
When an atom loses an electron it becomes positive, what type of ion is that?
A cation
What period number is Sodium in?
3
Draw the lewis structure of the following element.
Magnesium
2 valence - I will draw
What oxidation number does Boron have? (Include charge and number)
+3
Which element below has the highest electronegativity?
Hg, P, Ge, In
P
What oxidation number does Fluorine have? (include charge and number)
-1
Write the complete electron configuration of Calcium
1s2 2s2 2p6 3s2 3p6 4s2
Red Light
Which element is the biggest?
F, S, Ba, Sc
Ba
Which type of electromagnetic radiation has the lowest frequency (v)?
radio waves
On your visible light spectrum, what are the colors, IN ORDER, of visible light (you can just put the first letter of the word in order)
ROYGBIV
Which type of electromagnetic radiation has the highest frequency (v)?
Gamma rays
Write the complete electron configuration of Silver
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d9
Which element has the lowest ionization radiation?
Br, Ar, Sr, Be
Honors: Tell me what ionization energy is out loud when I call on your group
The energy required to remove an electron
Convert 233 cm to km. Put your final answer in scientific notation
233 cm / 100 cm = 2.33 m / 1000 m = 0.00233 km
2.33 x 10^-3 km
Which element has the greatest shielding effect?
F, Br, I, Cl
Honors: Explain what shielding effect is?
I
The bigger the atom is (more energy levels) the more the inner electrons block the attraction to the nucleus of the valence electrons
What is the heisenberg uncertainty principle?
it is impossible to determine the position and velocity of an electron or other particle simultaneously.