Intro to Chemistry Exam 1 || With Questions & Answers (Graded A+)
Intro to Chemistry Exam 1 || With Questions & Answers (Graded A+)
What is Matter? - ANSWER - ______ is anything that occupies space and has mass.
What is Mass? - ANSWER - ____ is the amount of matter in an object; never change...
, Intro to Chemistry Exam 1 || With
Questions & Answers (Graded A+)
What is Matter? - ANSWER - ______ is anything that occupies space and has mass.
What is Mass? - ANSWER - ____ is the amount of matter in an object; never
changes
What is Weight? - ANSWER - _______ is the gravitational force exerted on an
object; can change
Define: Element - ANSWER - _______ is made up of molecules/atoms of the same
kind; cannot be chemically subdivided into simpler substances
Define: Compound - ANSWER - ________ is made up of molecules/atoms of two or
more kinds; can be chemically subdivided into simpler substances
Define: Atom - ANSWER - A/An ____ is the unit from which matter is made; limit of
chemical subdivision; smallest particle of an element; composed of protons,
neutrons, and electrons
Define: Nucleus - ANSWER - The _______ is the central core of atoms that contains
protons and neutrons; has a positive(+) charge equal(=) to the number of protons
Define: Electrons - ANSWER - _________ move in a circular orbit around the
positive(+) nucleus
Define: Atomic Weight - ANSWER - ______ ______ is the relative weight of atoms in
terms of C12; the sum of protons and neutrons
Define: Gram Atomic Weight - ANSWER - ____ ______ ______ is the atomic weight
expressed in grams
Define: Molecule - ANSWER - A/An ________ is the smallest unit of a compound
Define: Molecular Weight - ANSWER - ________ ______ is the sum of the atomic
weights of all the atoms forming the molecule
Define: Gram Molecular Weight - ANSWER - The _________ ______ is the
molecular weight of a compound expressed in grams
Define: Electrolyte - ANSWER - A/An ___________ is a substance whose solution
will conduct an electric current
Define: Acid - ANSWER - ____ is a substance that yields hydrogen ions in solution
Define: Base - ANSWER - ____ is a substance that yields a hydroxyl (OH-) ion in
solution; substance that can accept a proton
, Define: Salt - ANSWER - ____s are compounds formed by replacing the hydrogen of
an acid with a metal
Define: Radical / Polyatomic Groups - ANSWER - A _______ or __________ _____
is a group of elements that behave like a single element
Define: Valence - ANSWER - _______ is the property of an element that determines
the number of hydrogen (H) atoms that its atom can combine with or displace
Define: Chemistry - ANSWER - _________ is the study of matter
Define: Trace Elements - ANSWER - _____ ________ are elements that are
essential to the body but are found in minute quantities
Define: Isotope - ANSWER - A/An _______ is a different form of the same element;
same atomic number but a different atomic weight
Define: Atomic Number - ANSWER - ______ ______ is the number of protons in the
nucleus
Define: Radioisotope - ANSWER - A/An ____________ is an unstable isotope
Define: Periodic Table - ANSWER - The ________ _____ is the arrangement of the
elements in a table based on the periodic law
Name the Nine(9) Element Groups - ANSWER - 1. Alkali Metals
2. Alkaline Earth Metals
3. Transition Metals
4. 'Other' Metals
5. Metalloids
6. Non-Metals
7. Halogens
8. Noble Gases
9. Rare Earth Elements
Name Fourteen(14) Transition Metals - ANSWER - Chromium Manganese Iron
Cobalt
Nickel Copper Zinc Molybdenum
Silver Cadmium Tungsten Platinum
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