Worksheets2.1 Quiz Review
Total questions: 13
Worksheet time: 7mins
A difference in the number of neutrons in an atom denotes _____________ while a different number of protons denotes _________.
different elements; different isotopes
different elements; different orbitals
different isotopes; different elements
different orbitals; different shells
When do compounds form?
If the nuclei of those elements are unstable
If the valence orbital isn't full
If one of the elements is negatively charged and one is positively charged
If one of the atomic masses is high and one is low
Which of the following particles is the smallest?
Proton
Neutron
Electron
Which of the following is NOT one of the six elements that comprise 99% of biotic systems?
Carbon
Calcium
Oxygen
Helium
How many electrons can be held in the third shell (maximum)?
8
6
4
2
Which atom would be most likely to gain electrons? (all answers are assumed to be valence electrons)
An atom with 7 electrons in the third shell
An atom with 1 electron in the third shell
An atom with 1 electron in the fourth shell
An atom with 7 electrons in the second shell
Which atom is most likely to become a positively charged ion?
An atom with 7 of 8 valence electrons
An atom with 1 of 8 valence electrons
An atom with 8 of 8 valence electrons
An atom with 4 of 8 valence electrons
What kind of bonds form between hydrogen and oxygen in water?
Ionic
Covalent
Hydrogen
If carbon's atomic number is 6, how many neutrons does carbon-14 have?
6
8
14
How many valence electrons does an oxygen atom have?
2
4
6
8
How many valence electrons does an atom of hydrogen have?
0
1
2
3
Who first theorized the atom?
Aristotle
Socrates
Descartes
Democritus
van der Waals forces only work if...
the two atoms are very close together
the two atoms form covalent bonds
the two atoms form hydrogen bonds
