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BSC 114 Exam 1 questions with correct answers graded A+
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BSC 114 Exam 1 questions with correct answers graded A+
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BSC 114 Exam 1A ______ is two or more elements combined together in a fixed ratio. - correct answer ✔✔Compound
Electrons in the outermost shell of an atom are called the ______ electrons. - correct answer
✔✔Valence
A type of covalent bond where one atom is more electronegative than the other atom. - correct answer
✔✔Polar
anything that takes up space and has mass - correct answer ✔✔matter
Water loving substances - correct answer ✔✔hydrophilic
a type of subatomic particle in the nucleus of an atom
that is neutral - correct answer ✔✔neutron
The exchange and sharing of electrons between
atoms is called ___________ reactions. - correct answer ✔✔chemical
In a _____ bond, there is the actual loss and gain of
electrons - correct answer ✔✔ionic
When two forms of a given element have the same
atomic number but different atomic weights, they are said to be _____ of each other - correct answer
✔✔isotopes
atomic _________ = the number of protons - correct answer ✔✔number
, The dissolving agent of a solution - correct answer ✔✔solvent
When a radioactive isotope decays, this leads to a
change in the number of protons in the nucleus, thus transforming the atom to an atom of a different
_________. - correct answer ✔✔element
The substance that is dissolved in a solution - correct answer ✔✔solute
Substances that resist changes in pH - correct answer ✔✔buffers
A substance that is nonpolar and will not readily
dissolve in water - correct answer ✔✔hydrophobic
Basic solutions can also be referred to as______. - correct answer ✔✔alkaline
When molecules of water move fast enough they can
overcome the attractions they have for each other and a liquid can become a gas. This is called ____ -
correct answer ✔✔evaporation
cannot be broken down to another substance by chemical means - correct answer ✔✔element
Positively charged particles in the nucleus of an atom. - correct answer ✔✔proton
When two atoms of the same element are in a covalent bond, we can assume that this is a ______
covalent bond. - correct answer ✔✔nonpolar
When two atoms of the same element are in a covalent bond, we can assume that this is a ______
covalent bond. - correct answer ✔✔mass
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