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Nature of Science
Formulas
Name the Products
Atomic Theory
Lewis Dot Structures
100
The number 0.0020489 has five of these.
What are
significant figures
?
100
Carbon tetrachloride
What is
CCl
4
?
100
It's the product a synthesis reaction:
Na + Cl
2
--> _______
What is NaCl?
100
A pre-modern philosopher who was the first to propose that matter is made up of atoms.
Who is
Democritus
?
100
It's the Lewis Dot diagram for carbon
What is C (with 4 valence electrons)?
200
It's the number of liters in 35.4 milliliters.
What is
0.0354
?
200
Magnesium fluoride
What is
MgF
2
?
200
They're the products of this single displacement reaction:
Mg + AlCl
3
--> _______ + _________
What are
Al
and
MgCl
2
?
200
A model named for him, this scientist theorized that electrons existed in distinct 'rings' or 'shells' around the nucleus.
Who is
Neils Bohr
?
200
It's the number of valence electrons in phosphorus.
What is 5?
300
It's the result of 0.254 + 12.4, using correct significant figures.
What is
12.7
?
300
Aluminum sulfate
What is
Al
2
(SO
4
)
3
?
300
They're the products of a neutralization reaction:
NaOH + H
2
SO
4
--> _____ + ______
What are
H
2
O
and
Na
2
SO
4
?
300
Using his gold foil experiment, he disproved JJ Thomson's plum pudding model by discovering the most of the atom is empty space.
Who is
Ernest Rutherford
?
300
It's the number of covalent bonds that can be formed by sulfur.
What is 2?
400
The term for how close a set of measurements are to one another.
What is
precision
?
400
Ammonium carbonate
What is
(NH
4
)
2
CO
3
?
400
The products of the decomposition of sodium carbonate.
What are
Na
2
O
and
CO
2
?
Na
2
CO
3
--> Na
2
O + CO
2
400
The first modern scientist to publish his idea that matter is made up of atoms in the early 19th century.
Who is
John Dalton?
400
Draw the Lewis Dot Structure for N
2
H
4
What is ...
500
It's
0.000 000 025 34
expressed in scientific notation.
What is
2.534x10
-8
?
500
Butane
What is
C
4
H
10
?
500
The products of a double displacement reaction between sodium bromide and calcium sulfate
What are
sodium sulfate
and
calcium bromide
?
or...
Na
2
SO
4
and
Ca
2
Br
?
500
After discovering the electron with a cathode ray tube, he developed a model of the atom with electrons as the plums in his 'plum pudding model.'
Who is JJ Thomson?
500
It's the Lewis dot structure for methane.
What is CH
4
?