What do we call the columns of the periodic table?
Groups
100
What is the name of NaCl?
Sodium Chloride
100
What is the correct way to smell a chemical in lab?
Wafting.
200
How many electrons does sulfide have?
18 electrons.
200
What equipment do you use to measure mass?
Scale or Balance.
200
Which element has this noble gas electron configuration?
[He] 2s1
Lithium
200
What is the formula for beryllium floride?
BeF2
(2 is subscript)
200
This is a negatively charged ion.
Anion
300
How many core electrons are in sulfide?
10 core electrons.
300
Draw a graduated cylinder.
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300
What element has this electron configuration?
1s2 2s2 2p6 3s2 3p1
Aluminum.
300
What is the formula for rubidium bromide?
RbBr
300
What technique do you use to measure the volume of an irregularly shaped object?
volume displacement.
400
how many protons, electrons, and neutrons are in manganese-55?
25 Protons
25 Electrons
30 Neutrons
400
What is 50 centimeters in meters?
0.5 meters.
400
What element is in group 4a and in the 5th period?
Tin.
400
What is the formula for aluminium hydride?
AlH3
(3 is subscript)
400
Name one chemical property of metals.
ability to rest OR tendency to lose electrons
500
How many protons, electrons, and neutrons are in aluminum-27 ion?
13 Protons
10 Electrons
14 Neutrons
500
An object has a mass of 12.0 grams. It is placed in a graduated cylinder containing 30.0 ml of water. The final volume is read as 39.0 ml. What is the density of the object?