This quiz is to help prepare first year chemistry students for their first semester exam.
An element is a homogeneous mixture and a compound is a heterogeneous mixture.
An element is a pure substance and a compound is a physical mixture of elements.
An element is a pure substance and a compound is a chemical combination of elements.
None of these are correct.
11%
9.0%
.89 %
89 %
Law of Conservation of Mass
Law of Definite Proportions
Law of Multiple Proportions
Law of Octaves
9. g
80. g
71. g
You need more information to answer this question.
Mass number
Atomic number
Atomic mass
None of these
Mass number
Atomic number
Atomic mass
None of these.
The number of protons are the same, but the number of neutrons are different.
The number of protons are the same, but the number of electrons are different.
The number of neutrons are the same, but the number of electrons are different.
Two of these are correct.
The energy of a wave.
How fast the wave is going.
One full cycle of a wave pattern.
The number of waves that pass a particular point in a second.
2
4
6
8
7.55 x 10^-21 J
9.06 x 10^26 J
3.31 x 10^-19 J
6.00 x 10^-7 J
6.82 x 10^14 Hz
6.82 x 10^16 Hz
4.52 x 10^-19 Hz
2.92 x 10^42 Hz
7.55 x 10^14 nm
3.98 x 10^-7 nm
398 nm
600. nm
Metals
Nonmetals
Metalloids
Transition metals
The block to the far left.
The block in the middle.
The block to the far right.
The block below the main table.
Alkali metals
Alkaline earth metals
Halogens
Noble gases.
Increases going left to right and increases going down.
Increases going left to right and decreases going down.
Decreases going left to right and increases going down.
Decreases going left to right and decreases going down.
Increases going left to right and increases going down.
Increases going left to right and decreases going down.
Decreases going left to right and increases going down.
Decreases going left to right and decreases going down.
Electron love.
The energy that it takes to gain an electron.
The energy that it takes to remove an electron.
Energy associated with losing 3 valence electrons
Br-
Br
Cl
F
Mn
Tc
Br
Cl
S
P
D
F
S block
D and f block
Left of the 'staircase'
More than one of these is correct.
Hypothesis
Observation
Experiment
All these are correct.
27 kg
0.27 kg
2.7 kg
It is impossible to figure out since the jar is 3 dimensional.
8.2 x 10^-9 m
8.2 x 10^7 m
8.2 x 10^9 m
8.2 x 10^-7 m