Test questions

Question 1

Which major branch of Chemistry would be most concerned with studying a series of chemical reactions in order to measure the amount of heat being released in each one?
Physical Chemistry
Organic Chemistry
Biochemistry
Inorganic Chemistry

Answer 1

Physical Chemistry

Question 2

The synthetization of new carbon compounds is studied in ___________ chemistry.
Physical
Inorganic
Organic
Analytical

Answer 2

Organic Chemistry.

Question 3

Which scientist discovered the electrons?
John Dalton
Neil Bohr
JJ Thomson
Ernest Rutherford

Answer 3

J.J. Thomson.

Question 4

An energy level or shell is a region of space where there is a high probability of finding
a neutron
an electron
a proton
a positron

Answer 4

an electron.

Question 5

According to Dalton’s Atomic Theory
*atoms are composed of small particles
*no two atoms of given elements are the same
*atoms cannot be subdivided created or destroyed
*only compounds are made of atoms

Answer 5

atoms cannot be subdivided, created, or destroyed.

Question 6

Which statement compares the masses of two subatomic particles?
*The mass of a proton is greater than the mass of an electron.
*The mass of a proton is greater than the mass of a neutron.
*The mass of an electron is greater than the mass of a neutron.
*The mass of an electron is greater than the mass of a proton.

Answer 6

The mass of a proton is greater than the mass of an electron.

Question 7

Which statement matches a subatomic particle with its charge?
A proton has a negative charge.
A neutron has no charge.
A proton has no charge.
A neutron has a negative charge.

Answer 7

A neutron has no charge.

Question 8

An atom has a mass number of 23 and atomic number 11. The number of protons are_________.
11
34
23
44
12

Answer 8

11

Question 9

What is the mass number of an atom which contains 28 protons, 28 electrons, and 34 neutrons?
56
90
62
28

Answer 9

6r2

Question 10

Elements that have the same number of energy levels are said to be in the same ______.
group
period
family
classification

Answer 10

period

Question 11

Which major branch of Chemistry would be most concerned with quantifying the components and composition of an unknown sample of matter?
Physical
Analytical
Bioanalytic
Organic

Answer 11

Analytical Chemistry

Question 12

.The periodic table is arranged by increasing atomic mass

True
False

Answer 12

true

Question 13

Periodic table is divided into metal, metalloids and non-metals

True
False

Answer 13

true

Question 14

Transition metals are found between
Groups 1-2
Groups 2-3
Groups 3-4
Groups 4-5

Answer 14

Groups 2-3

Question 15

Which element is in group 2 and period 3 of the periodic table?
Sodium
beryllium
Magnesium
boron

Answer 15

Magnesium

Question 16

The valence electrons tell the period of the atoms are found in on the periodic table.

True
False

Answer 16

False