Introduction to the Periodic Table
Practice Test
1.
Why was Mendeleev's periodic table widely accepted?
a.
He was the first to notice a pattern of similar properties among elements.
b.
He organized the first 14 known elements.
c.
His periodic table listed all of the elements in the correct order.
d.
He predicted the existence and properties of undiscovered elements.
2.
The chemical symbol for sodium is derived from the __________ word natrium.
a.
Greek
b.
French
c.
Russian
d.
Latin
3.
Lavoisier came to the conclusion that air is a mixture made up mostly of these two gases.
a.
oxygen and methane
b.
hydrogen and oxygen
c.
nitrogen and oxygen
d.
oxygen and carbon dioxide
4.
What properties did Rutherford use in the design of the gold foil experiment?
a.
positively charged electrons distributed in a uniform negative charge
b.
alpha particle's negative charge and random distribution of protons
c.
alpha particle's positive charge and electron's negative charge
d.
alpha particle's negative charge and gold foil's positive charge
5.
A heterogeneous mixture is poured through a piece of filter paper that is positioned over a beaker. What is the substance that is collected in the beaker?
a.
Not enough information is given.
b.
solid
c.
heterogeneous mixture
d.
solution
6.
An explanation based on many observations and supported by the results of many experiments is called a _____________.
a.
fact
b.
theory
c.
hypothesis
d.
scientific law
7.
Ne-21 is an _____________ of neon.
a.
allotrope
b.
atomic mass
c.
isotope
d.
atomic number
8.
A sample of gold has a mass of 15.7 g and displaces 0.81 cm3 of water in a graduated cylinder. What is the density of gold?
a.
0.81 g/cm3
b.
.05 g/cm3
c.
14.9 g/cm3
d.
19.3 g/cm3
9.
What element makes up approximately 65% of your body by mass?
a.
nitrogen
b.
calcium
c.
oxygen
d.
hydrogen
10.
A thinking device that helps you understand and explain macroscopic observations is called a/an ______________.
a.
observation
b.
experiment
c.
prediction
d.
scientific model
11.
Which element is NOT suitable to dope silicon to produce an n-type semiconductor?
a.
phosphorus
b.
antimony
c.
carbon
d.
arsenic
12.
The statement that the physical and chemical properties of the elements repeat in a regular pattern when they are arranged in order of increasing atomic number is known as the ______________.
a.
Mendeleev theory
b.
Dobereiner's hypothesis
c.
periodic law
d.
Group theory
13.
In boron-doped silicon, electrons are said to move into and out of ___________.
a.
inner energy levels
b.
diodes
c.
holes
d.
nuclei
14.
An element's emission spectrum is thought to be produced when electrons move from _____________.
a.
inside the atom to outside the atom
b.
the nucleus to energy levels
c.
higher to lower energy levels
d.
lower to higher energy levels
15.
Which of the following is a chemical property of iron?
a.
It rusts.
b.
It conducts electricity.
c.
It is a solid at room temperature.
d.
Its density is 7.87 g/mL.
16.
This isotope is often used to date prehistoric fossils.
a.
uranium-235
b.
oxygen-16
c.
calcium-40
d.
carbon-14
17.
Sodium and chlorine react to produce ______________.
a.
liquid sodium
b.
sodium chloride
c.
sodium chlorine
d.
gaseous chlorine
18.
What group of elements was unknown to Mendeleev when he first organized his periodic table?
a.
the transition elements
b.
Group 1, the alkali metals
c.
Group 18, the noble gases
d.
Group 2, the alkaline earth metals
