WorksheetsChem 6 Unit 3 practice
Total questions: 34
Worksheet time: 24mins
Protons and neutrons make up...
the electron cloud
nucleus
the atom
empty space
electromagnetic force
holds the atom together with positive and negative protons and electrons
keeps protons from repelling
changes neutrons to protons
produces radiation
Nitrogen has how many protons, neutrons, and electrons?
(put answer like this 1,1,1)
(a)
Calcium- 44 has a mass of _____, _____ protons, and ____ neutrons
40,20,24
44,24,24
44,20,24
44,20,20
Columns on the periodic table are the ________ and rows are the __________
groups, periods
periods, groups
________ help to prevent repulsion of like charges in the nucleus
protons
electrons
neutrons
both a and c are correct
groups contain the same number of...
core electrons
valence electrons
electrons
periods
_____ have a different number of electrons
_____ have a different number of neutrons but same number of ______
ions, isotopes, protons
ions, electrons, protons
isotopes, ions, protons
ions, protons, isotopes
Sodium-25 has how many neutrons?
11
12
13
14
protons are always equal to...
(a)
How many electrons does Rb have?
38
37
40
85
how many valence electrons does iodine have?
5
6
7
8
Elements with valence electrons in the ____ block belong to the ______.
s block halgoens
f block noble gases
d block transition metals
p block alkali metals
What classification of elements are dull, brittle, and not malleable
metals
non-metals
metalloids
Which element has 5 electron shells and has 7 valence electrons
I
Te
Se
Br
Boron, Arsenic, and Antimony are ...
non-metals
d blocks elements
lanthanides
metalloids
What is the electron configuration for Sodium?
(a)
Halogens have matter in what state?
solids
liquid
gas
all three
What family would an element with an electron configuration below belong to
1s(2)2s(2)
alkali metals
alkaline earth metals
halogens
noble gases
What groups of elements are the most stable and unreactive?
alkali metals
alkaline earth metals
halogens
noble gases
Rank the following in order of increasing ionization energy:
Si,N, F, Zn, O
O, N, Zn, Si, F
F, O, N, Si, Zn
Si, N, O, Zn. F
Zn, Si, N, O, F
Group 17 elements form:
1+ anions
1- anions
1+ cations
1- anions
The electron configuration below represents what element?
1s(2) 2s(2) 2p(4)
Sodium
Oxygen
Nitrogen
Fluorine
what element below has the smallest atomic radius
calcium
potassium
nitrogen
carbon
All of the following are valid electron configurations except:
[Ne]3s1
1s22s22p63s23p64s24p6
1s22s22p63s23p64s23d104p6
[He] 2s2
Write the common ion for Magnesium
(a)
Write the common ion for F?
(a)
How many electrons does Rb- have?
37
36
38
85
what is the mass and how many neutrons does this atom have? 83Li+
8,3
7,3
8,5
7,4
Convert 65 mg to g
0.065 g
0.065 mg
6500 g
0.65 g
ionization energy is...
how much energy it takes to remove an electron
the measure of the nucleus to the outside of the electron cloud
adding an electron
the force that keeps an atom together
atomic radius is...
how much energy it takes to remove an electron
the measure of the nucleus to the outside of the electron cloud
adding an electron
the force that keeps an atom together
Which is a good conductor of heat an electricity?
Na
O
S
F
I have a block that has a mass of 50 g and a volume of 10 mL what is the density?
50 g/mL
5 g/mL
10 g/mL
5000 g/ mL
