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Compounds, Acids & Bases Flashcards | StudBud
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Compounds, Acids & Bases
Compounds, Acids & Bases
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Science 6 Chapter 7 Sections C-D
Flashcards
38 cards
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Practice quiz
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Questions
38
Answers
1
What type of substance forms hydroxide ions (OH-) when dissolved in water and have a bitter taste?
compound
base
acid
neutral
2
Molecules combine to form a new substance.
decomposition
synthesis
3
In a covalent bond, the atoms share electrons.
True
False
4
In a stable atom, the outermost shell is not completely full and needs to gain or lose electrons.
True
False
5
An atom that has gained or lost electrons and has a charge
element
ion
isotope
molecule
6
An ionic bond forms when positively and negatively charged ions
repel
each other.
True
False
7
The range of "alkaline" on the pH scale is
5-10
7.1-14
0-6.9
0-5
8
Which family on the periodic table rarely undergo chemical reactions/
transition metals
noble gases
alkaline
halogens
9
The compound H
2
CO
3
has __ atom(s) of carbon in it.
three
two
zero
one
10
An atom that has gained or lost electrons
ion
element
compound
atom
11
The range of "acidic" on the pH scale is
0-6.9
5-10
0-5
7.1-14
12
What type of substance forms hydrogen ions (H+) when dissolved in water and have a sour taste?
alkaline
neutral
base
acid
13
An example of an ionic compound that is formed between sodium and chlorine
salt
water
14
In a
stable
atom, the outermost shell is completely closed or filled up
True
False
15
What type of bonds form when one atom loses electrons and another atom gains electrons?
metallic
ionic
noble
covalent
16
What elements are present, and how many atoms of each in the formula CaSO
4
for a sulfate?
carbon - 1; argon - 1; sulfur - 1; oxygen - 4
calcium - 1; sulfur - 1; oxygen -4
carbon - 4; sulfur - 4; oxygen - 4
calcium - 4; sulfur - 4; oxygen - 4
17
Atoms of the same element joined together
molecule
chemistry
chemical change
atomic number
18
A substance; only one kind of atom
element
molecule
ion
atom
19
Sour candy is a strong
base
neutral substance
acid
20
The process in which different types of atoms join and form a new substance
atomic number
molecule
chemical change
chemistry
21
Substance formed as a result of a chemical change; two or more different kinds of elements joined
element
compound
atom
ion
22
The study of matter
molecule
atomic number
chemistry
chemical change
23
Soda is a strong
acid
neutral substance
base
24
In a(n) __ atoms share electrons.
ionic bond
element
salt
covalent bond
25
Ammonia is a strong
neutral substance
base
acid
26
You can determine the concentration of acids or bases in a solution by using __ .
a salt
the periodic table of elements
the pH scale
a particle accelerator
27
Lemons are a strong
neutral substance
acid
base
28
Based on the number of protons in the nucleus
chemistry
molecule
chemical change
atomic number
29
"Neutral" on the pH scale is the number
20
14
0
7
30
If an atom loses an electron, it becomes a
positive
ion.
False
True
31
Pure water is a
neutral substance
acid
base
32
Chemical symbols and numbers abbreviating the name of a compound
chemical change
chemical formula
molecule
atomic number
33
A compound breaks apart into two or more simpler compounds.
synthesis
decomposition
34
When positively and negatively charged ions attract each other they form a(n)
neutron
ionic bond
indicator
covalent bond
35
A __ reaction occurs when a compound is broken down into simpler compounds.
replacement
combustion
decomposition
synthesis
36
The smallest piece of an element that can be recognized as that element
compound
element
atom
ion
37
Hydrochloric acid is a strong
base
acid
neutral substance
38
A substance that changes color when exposed to acid or base solutions is called a(n) __ .
molecule
ion
salt
indicator
