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Chemistry
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1
Organic chemistry is the study of all substances containing
carbon
sulfur
nitrogen
hydrogen
2
Redox is also known as
oxidation-reduction
organic reaction
reduction-oxygenation
reaction-oxidation
3
the mass of an atom, approximately equal to the number of protons and neutrons in the atom
atomic number
atomic mass
chemical symbol
element name
4
a substance made of two or more elements
chemically combined
in a specific ratio, or proportion
mixture
compound
element
5
What are elemental molecules?
molecules large enough to be seen by the naked eye
molecules containing only one atom of a single element
molecules containing two atoms each of different elements
molecules containing two or more atoms of the same element
6
the
neutral
particles found in atoms
proton
electron
neutron
7
Electrons have a much
larger
mass than protons.
false
true
8
Which represents a compound molecule?
03
Na
H2O
O2
9
Which substance is an example of an elemental molecule?
ethyl alcohol
distilled water
Ozone
silicone
10
a
symbol
that show the elements in a compoundand the
ratio
of atoms
Electron Dot Diagram
Chemical Symbol
Electron Cloud
Element Box
11
What is the charge of the black particle (
#1
) in the model below?
positive (+)
neutral (0)
negative (-)
either positive (+) or neutral (0)
12
The periodic table is organized by
alphabetically by chemical symbol
atomic number
atomic mass
abundance on Earth
13
You can determine the number of
valence electrons
by the:
atomic mass
period
atomic number
group (family)
14
the
positively
charged particles found in all atoms
electron
neutron
proton
15
An _______ bond forms when a cation transfers its extra electron to an anion.
covalent
alloy
metallic
ionic
16
the electrons in the
outermost
energy level of an atom
valence electron
electron
ion
proton
17
model of atomic structure
, in which electrons circulate around the nucleus in orbits with different
energy levels
Electron Cloud Model
Periodic Table of Elements
Bohr Model (Planetary Model)
Punnett Square
18
What is an example of an oil-in-water emulsion?
thick cream
cooling gel
moisturizing lotion
cleansing milk
19
Ice is an example of water in which state of matter?
Gas
Cold
Liquid
Solid
20
Enzymes are catalysts for chemical reactions in living organisms?
False
True
21
the
negatively
charged particles found in all atoms
proton
electron
neutron
22
What best describes inorganic chemistry?
Does not contain carbon
Contains carbon
Chemistry on living matter
Chemistry on dead matter
23
What is an anion?
a neutral atom
a negatively charged atom
a positively charged atom
a type of onion
24
Anions are ____.
negative ions formed by gaining electrons
negative ions formed by losing electrons
positive ions formed by gaining electrons
positive ions formed by losing electrons
25
atoms that acquire an overall net charge as a result of the loss or gain of electrons
valence electron
ion
isotope
26
In which type of matter will molecules and atoms will spread out to fill any container?
liquid
gas
solid
27
What state of matter is this?
gas
solid
sold
liquid
28
a table of elements arranged by atomic number that shows patterns in their properties
element box
group
periodic table of elements
period
29
What is a cation?
a positively charged atom
a neutral atom
a negatively charged atom
a breed of cat
30
In living things many enzymes are ________
nucleic acids
lipids
carbohydrates
proteins
31
a row of elements on the periodic table
periodic table of elements
period
group
family
32
How do cations react to form compounds?
lose electrons
become negative
share electrons
gain electrons
33
the
9
in the Fluorine element box is the
atomic mass
valence electrons
chemical symbol
atomic number
34
What is the charge of the red particle (
#2
) in the model below?
either positive (+) or neutral (0)
neutral (0)
positive (+)
negative (-)
35
Surfactants that cause oil and water to form an emulsion ...
sulfur
emulsifiers
solute
solvent
36
Enzymes in your saliva change ____________________.
solid food to fat
salt to carbohydrates
starch to sugar
oxygen to carbon dioxide
37
the number of
protons
in an atom
atomic number
element name
chemical symbol
atomic mass
