QUESTION 19 The most energetic kind of electromagnetic radiation is which of the
ID: 1587480 • Letter: Q
Question
QUESTION 19
The most energetic kind of electromagnetic radiation is which of the following?
Infrared waves
Microwaves
Gamma rays
X-rays
4 points
QUESTION 20
If you use an electrical current to break down water, you get what two gases?
hydrogen and oxygen
carbon and dioxide
carbon and oxygen
hydrogen and carbon
4 points
QUESTION 21
How is the organization of the Periodic Table of Elements related to the number of electrons in the outermost shell of atoms?
Within a given row, all electrons are within the same shell.
The electrons within elements in the leftmost column fill the lowest energy shells.
A different column in the Periodic Table corresponds to a different shell.
A different row in the Periodic Table corresponds to a different shell.
4 points
QUESTION 22
In the Rutherford model of the atom, electrons would not stay in orbit very long because they would spiral down into the nucleus. Yet, the Rutherford Model is similar to the planetary model of the solar system. Why don’t the planets spiral down into the Sun?
The gravitational force is much, much weaker than the electrical force so the effectis virtually non-existent.
Because the planets and Sun are much larger than electrons and a nucleus.
Unlike the gravitational force, the electrical force between two objects increases withtheir separation.
Unlike electrons, planets are not accelerating and therefore don’t emit energy in theform of radiation.
4 points
QUESTION 23
When two atoms link up we call that:
periodicity.
a chemical bond.
a noble gas.
valence.
4 points
QUESTION 24
Because of the distribution of electrical charges in metals, metals tend to be:
malleable.
dull (not shiny).
electrically non-conductive.
undesirable for industrial purposes.
4 points
QUESTION 25
The covalent bond is like the ionic bond because of _________, and it is like the metallic bond because of __________.
the sharing of electrons; the many atoms involved
the relatively few number of atoms involved; the sharing of electrons
the transfer of electrons from one atom to another; the many atoms involved
the few number of atoms involved; the transfer of electrons
Infrared waves
Microwaves
Gamma rays
X-rays
Explanation / Answer
Question 19: Its a fact that Gamma Rays has maximum energy.
Question 20: Electrolysis of water is decomposition of water into oxygen and hydrogen gases.
Question 21: a) The rows correspond to the electrons filling in same shell
Question 22: The planets are not accelerating and therefore don't emit energy in the form of radiation.
Question 23: a chemical bond
Question 24: Malleable
Question 25: c) The transfer of electrons from one atom to another ....