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Duplicate of Atoms, molecules, compounds & mixtures Flashcards | StudBud
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Duplicate of Atoms, molecules, compounds & mixtures
Duplicate of Atoms, molecules, compounds & mixtures
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Basic chemistry terms - compounds, atoms, mixtures, elements #compounds #atoms #mixtures #elements
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Questions
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Answers
1
In the chemical formula 3 H
2
O
2,
how many Molecules are there?
12
6
3
2
a coefficient
Multiplies the entire molecule.
Multiplies only the element it is in front of.
3
This image shows sub-atomic particles called protons, neutrons & electrons. This diagram is…
An element
A mixture
An atom
A compound
4
If the mass of carbon is 12 and the mass of oxygen 16 is which molecule has more mass CO2, O2,
O2
1
CO2
5
In this diagram which boxes represent elements? Choose all correct answers.
D
C
B
A
6
How many elements are in the molecule shown?
30
20
1
4
7
The average mass of a phosphorous atom is
15 atomic mass units
1 atomic mass unit
30.974 atomic mass units
8
In this diagram, C represents
An element
A mixture
A compound
An atom
9
In the chemical formula 3 H
2
O
2,
what is the subscript?
2
3
10
Lemonade is an example of
An element
A compound
A mixture
An atom
11
In the chemical formula 3 N
2
H
4
O
3,
how many total atoms are there?
3
27
9
12
What is the correct chemical formula for the molecule shown?
NaHCo
NaHCO3
3 NaHCO
13
Which of these are pure substances?
X,Y,Z
All four of them
Only Z
Only X
14
A substance with different compounds or elements not chemically combined is called
An atom
A compound
An element
A mixture
15
A substance made of two or more types of atoms bonded together is called…
A mixture
An atom
An element
A compound
16
In this diagram, D represents
A compound
An atom
A mixture
An element
17
All matter, whether gas, liquid or solid, is made up of…
Atoms
Mixtures
Compounds
Elements
18
A substance made of only one type of atom is called…
A mixture
An element
An atom
A compound
19
Water (H
2
O) is made of two hydrogen atoms and one oxygen atom bonded together. Water is...
An element
A compound
An atom
A mixture
20
in a phosphorous atom How many protons neutrons and electrons are in a neutral atom?
15 of each
15 protons, 16 neutrons, 15 electrons
21
Diamonds are made of many carbon atoms in a special lattice arrangement. Diamonds are a(an)
An element
A mixture
A compound
An atom
22
A subscript
multiplies only the number it is directly behind.
multiplies the entire molecule.
23
In the chemical forumula 3 H
2
O
2,
how many atoms are there?
12
3
6
24
In the chemical formula 3 H
2
O
2,
what number is the coefficient?
3
2
25
In this diagram, W represents
An element
A mixture
An atom
A compound
26
On the periodic table square shown 15 represents
the number of protons
the atomic mass
the number of neutrons
the number of electrons
27
In the chemical formula 3 N
2
H
4
O
3,
how many total molecules are there?
7
21
3
