WorksheetsMidterm (3rd 9 Weeks) PT
Total questions: 27
Worksheet time: 20mins
the basic structural unit of matter
atom
matter
element
nucleus
a negatively charged subatomic particle that orbits the nucleus of an atom
proton
neutron
electron
matter
a subatomic particle, contained in the nucleus of an atom that has a neutral charge
proton
neutron
electron
matter
the positively charged subatomic particle contained in the nucleus of an atom
proton
neutron
electron
matter
Which of the following describes covalent bonds?
Bonds form because of opposite charges
electrons are shared to fill outer electron shells
Electrons are transferred between atoms
Covalent bonds are magical
What is the oxidation number for Oxygen?
+2
-2
+6
-6
What is the oxidation number for Sodium?
+1
-1
-2
-3
If an element has a positive (+) oxidation number, this means that
the atom of that element needs electrons to be full.
the atom of that element is stable and needs nothing.
the atom of that element can give away electrons in a chemical bond.
If an element has a negative (-) oxidation number, this means that
the atom of that element needs electrons to be full.
the atom of that element is stable and needs nothing.
the atom of that element can give away electrons in a chemical bond.
Bond between a metal and nonmetal. The electrons are transferred to get one element to a full shell in the bond.
Ionic
Covalent
Bond between two nonmetals. The electrons are shared to help each element in the bond get a full outer shell.
Ionic
Covalent
If given the compound pictured, how many atoms of Oxygen are present?
1
2
3
0
If given the compound pictured, how many Carbons are present?
1
2
3
0
When bonding Sodium and Chlorine, which element will GIVE away electrons?
Sodium
Chlorine
When bonding Calcium and Chlorine, which element NEEDS to gain electrons?
Calcium
Chlorine
The following characteristics belong to which category of elements? (Brittle, not conductors of electricity, not malleable)
metals
metalloids
nonmetals
The following characteristics belong to which category on the periodic table? (Semiconductors of electricity, can be shiny or dull)
metals
metalloids
nonmetals
The following characteristics belong to which category on the periodic table? (shiny, conductors of electricity, malleable)
metals
metalloids
nonmetals
