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TEST 2
TEST 2
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The atom, atomic theory and Trends
Flashcards
24 cards
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Practice quiz
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Questions
24
Answers
1
How many atoms are in Al
2
(CO
3
)
3
8
3
14
11
2
What has no mass and a negative charge?
nucleous
neutron
electron
proton
3
What is the difference between C-12 and C-13
1 proton
1 electron
no difference
1 neutron
4
For neutral Sulfur-30 how may of each subatomic particles does it have?
p+ 16 e- 16 n0 14
p+ 16 e- 14 n0 14
p+ 16 e- 16 n0 16
p+ 18 e- 16 n0 14
5
Which atom is in period 5 group 15?
Sb
Nb
P
Bi
6
Brass is considered
an element
a homogeneous mixture
a heterogeneous mixture
a compound
7
Which group already has their octet? (full outer ring and unreactive)
Inner Transitional metals
Nobel gases
Metalloids
Halogens
8
Who gave us the electron cloud?
Thomson
Chadwick
Schrodinger
Bohr
9
If Rutherford used a positive alpha particle why did he find a positive particle?
Because it was attracted
Because it was repelled
10
Periods
go down a column
go across in a row
are called families
are at the end of a sentence :)))
11
Which scientists put electrons on energy rings to help explain where light comes from?
Dalton
Bohr
Rutherford
Schrodinger
12
What is the SI unit for volume?
milliliters
meters3
Liter
meters
13
For Carbon-13 how many protons are there?
7
13
6
4
14
Which scientist had the 5 principles of the atomic theory?
Dalton
Schrodinger
Rutherford
Bohr
15
A typical diet is 1,850 cals per day how much energy in Joules is that?
58500 J
7730 J
443 J
1.85 J
16
All masses are compared to the standard of....
The scale/balance of a weighing device
Carbon-12
Nitrogen-14
Carbon-14
17
Ra is considered a......
Alkaline metal
Alkali metal
Transition Metal
Inner Transition metal
18
If I change the number of protons in an atom I.....
change the mass
change it into an isotope
change the charge
change the identity
19
Which of the following is a nonmetal liquid?
Carbon
Bromine
Mercury
Nitrogen
20
When Ba is an ion what is it's charge and did the electrons gain or lost?
-2 lost electrons
+2 lost electrons
+2 gained electrons
-2 gained electrons
21
Who gave us atomos?
Dalton
Democritus
Thomson
Schrodinger
22
Calc Ave mass of Br when it has 78.92 amu with 50.69% and 80.92 amu with 49.31%
7990.4 amu
80 amu
79.90 amu
79.92 amu
23
Has a mass of 1 and has no charge
Electron
Proton
Cloud
Neutron
24
135 degrees F is what in Celcius?
4080C
-1380C
570C
2750C
