What charge will protons, neutrons and electrons have?
You should match up each clearly to get credit.
positive, neutral, negative
100
Who has a bigger atomic radius, lithium or cesium?
Cesium- more electorns and therefore more energy levels (shells)
100
potassium sulfide
K2S
100
Li2O
What is lithium oxide
200
4.8x104 expanded
What is 48000
200
How many valence electrons does sulfur have?
6.
200
Who has a smaller ionization energy- nitrogen or carbon?
Carbon- less protons to hold valence electrons
200
aluminum bromide
AlBr3
200
CaS
calcium sulfide
300
Which, accuracy or precision, refers to the reproducibility and exactness of a measurement without reference to whether it is the correct value?
Precision
300
Write the electron configuration for Zinc
1s2 2s2 2p6 3s2 3p6 4s2 3d10
300
Which of the following is the best reason that silicon is larger than chlorine?
A. Chlorine has more protons and electrons
B. Silicon needs more valence electrons
C. Silicon has less protons to pull its outer shell inward
D. Chlorine has a higher proton energy to charge its rings
C
(P.S. Answer choice D is complete gibberish; I hope you didn't pick that one...)
300
magnesium nitrite
Mg (NO3)2
300
FeCl2
What is Iron (II) Chloride
400
What labels can be applied to purified a sample of mercury?
Word Bank:
Pure, mixture, element, compound, homogeneous, heterogeneous, atom, molecule, ion
Pure, element, atom
400
Write the electron configuration for Chlorine-1 (chlorine with a minus one charge).
1s2 2s2 2p6 3s2 3p6
400
Which of the following is the best reason for why its harder to steal an electron from sodium than potassium?
A. Potassium has more shells and can't hold onto its v.e. so far away
B. Potassium is a jerk, K? But Na is sodium fine.
C. Potassium has more protons and therefore a stronger pull on its electrons.
A
400
Titanium (IV) nitride
Ti3N4
400
Mg(NO3)2
What is magnesium nitrate
500
What labels can be applied to salt water?
Word Bank:
Pure, mixture, element, compound, homogeneous, heterogeneous, atom, molecule, ion
mixture, homogeneous (you can't see the salt!)
500
What is the name of group 17 on the periodic table AND list one (and only one) property they have.
Halogens. Properties may include: reactive, dull, brittle, insulators. (Non-metal is a classification not a property).
500
Ionic bonding involves (transfer/sharing) of electrons because of a (large/small) difference in electronegativity between the two elements.