Vocab 1
Anything that takes up space and has mass, everything that exists is made up of it
The most basic unit of matter; these are made up of the three subatomic particles
What is an atom?
a subatomic particle that is found in the nucleus and has a positive charge
What is a proton?
a subatomic particle that is not found in the nucleus and has a negative charge
What is an electron?
In general, metals, nonmetals, and metalloids located ______________ on the periodic table
What is
Metals on the left side
Nonmetals on the right side
Metalloids in between metals and nonmetals on the right side?
18 in total, the vertical columns on the periodic table that show the number of valence electrons
What is a family/group?
A pure substance made up entirely of one kind of atom, these are found on the periodic table
What is an element?
What is electronegativity?
7 in total, the horizontal sets of elements on the periodic table
What is a period/row?
Tell me the number of valence electrons for
Oxygen, Chlorine, and Potassium
What is
O = 6
Cl = 7
K = 1?
An atom that is created from an ionic bond due to the gaining or losing of an electron
What is an ion?
An atom of the same element that has different numbers of neutrons
What is an isotope?
A temporary, weak intermolecular force that arises from interactions between molecules that are close to each other, the weakest of the 4 bonds, constantly breaking and reforming
What is a Van der Waals force?
The subatomic particle that changes when an atom is an isotope, it is found in the nucleus and has no charge
What is an isotope?
List the number of protons, neutrons, and electrons for these two elements
Magnesium, atomic number = 12
Sulfur +1, atomic number = 16
What is
Magnesium: p=12, n=12, e=12
Sulfur: p=16, n=17, p=16?
This is a type of ion, the atom that has gained an electron and become negatively charged
What is an anion?
This is a type of ion, the atom that has lost an electron and become positively charged
What is a cation?
A temporary bond that forms when H is bonded to a highly electronegative atom, partial + forms on H and partial negative forms on the electronegative atom, the third weakest bond that occasionally breaks and reforms
What is a Hydrogen bond?
The difference between a molecule and compound is
What is...
A molecule is two of the same or different elements joined together
A compound is two or more DIFFERENT elements joined together?
So if there are more than two elements, it is both. If there is only one element, it is just a molecule. All compounds are molecules, but all molecules are not compounds.
List the atomic number (# of protons) and the mass number (# of protons and neutrons) for each
C Li+1 (isotope) S
What is
C = 6, 12
Li+1 = 3, 7
S = 16, 32
The number of protons + neutrons for an element
What is mass #?
the number of protons in an atom, seen in the top left on the periodic table
What is atomic #?
The difference between an ionic and covalent bond is
What is...
Ionic - between a metal and a nonmetal, gain or lose electrons, slightly stronger
Covalent - between two nonmetals, sharing of electrons, less strong than ionic?
The weight of protons + neutrons + electrons or the mass of an atom of a chemical element expressed in atomic mass units, found on the periodic table as a decimal
What is atomic mass?
Long question, I will double your timer
List each bond below as ionic bond, covalent bond, hydrogen bond, or Van der Waals force. Each letter choice represents one type of bond. Then, state whether they are an element, molecule, or compound and molecule.
a. KCl b. O and Mg that are close together
c. H2N2 or HF d. CH4 or Br2
What is
a = ionic bond, compound and molecule
b = Van der Waals, compound and molecule
c = Hydrogen bonds/Covalent bonds, both compound and molecule
d = Covalent bonds, CH4 is a compound and molecule/Br2 is a molecule only?