Question 1

The emission of a $\beta$particle is associated with the __________

Accepted Answer

The emission of a beta particle involves the conversion of a neutron to a proton, with the ejection of an electron and an antineutrino. This results in an increase in atomic number (since a proton has been gained) but no change in mass number (since the mass of an electron is negligible compared to the mass of a proton and neutron combined).

Question 2

The average atomic mass of carbon is 12.01 amu. What is the average atomic mass of carbon in grams? (1 amu = 1.6605402 *10^-²⁷ kg)

Accepted Answer

The answer of The average atomic mass of carbon is...

Question 3

What distinguishes one isotope from another?

Accepted Answer

The answer of What distinguishes one isotope from another?...

Question 4

Which one of the oxoacid formulas and names is not correctly matched?

Accepted Answer

The answer of Which one of the oxoacid formulas and...

Question 5

According to the Big Bang theory, which statement about the origin of the elements is not correct?

Accepted Answer

The statement that nuclear reactions all require the addition of energy to form the elements is incorrect. In fact, nuclear fusion reactions, such as those that occur in stars, release energy when lighter nuclei combine to form heavier nuclei.

Question 6

Which one of the following acids has an incorrect formula or is not named correctly?

Accepted Answer

The acid with formula HNO₂ is not a valid formula for any known acid. The correct formula for nitric acid is HNO3.

Question 7

A __________ particle is a high-energy particle with a negative charge.

Accepted Answer

A beta (b) particle is a high-energy, high-speed electron or positron emitted in the radioactive decay of an atomic nucleus, and it carries a negative charge when it is an electron.

Question 8

What is the correct symbol for an alpha particle?

Accepted Answer

The answer of What is the correct symbol for an...

Question 9

Write the complete atomic symbol with both a superscript and a subscript for a sodium ion that contains 11 protons, 10 electrons, and 12 neutrons.

Accepted Answer

The answer of Write the complete atomic symbol with both...

Question 10

Nuclear reactors used for power generation require uranium enriched in uranium-235. What is the average atomic mass of enriched uranium consisting of exactly 3.0% uranium-235 (235.04 amu) and 97.0% uranium-238 (238.05 amu)?

Accepted Answer

The answer of Nuclear reactors used for power generation require...

Question 11

Which one of the following acids has an incorrect formula or is not named correctly?

Accepted Answer

The answer of Which one of the following acids has...

Question 12

Give an example of a halogen.

Accepted Answer

The answer of Give an example of a halogen....

Question 13

Two neutrons were walking down the street. One said, "Wait a minute…I think I lost a __________!" The other one asked, "Are you sure?" The first replied, "Yes, I'm positive!"

Accepted Answer

The joke is a play on words involving neutrons and beta particles. In beta decay, a neutron can transform into a proton, emitting a beta particle (electron or positron) and an antineutrino. The punchline "Yes, I'm positive!" refers to the neutron becoming a proton, which is positively charged.

Question 14

Give an example of a metalloid (aka semimetal).

Accepted Answer

The answer of Give an example of a metalloid (aka...

Question 15

Give an example of an alkaline earth metal.

Accepted Answer

The answer of Give an example of an alkaline earth...

Question 16

Which stellar nuclear reaction is not correctly written?

Accepted Answer

The answer of Which stellar nuclear reaction is not correctly...

Question 17

Boron, which has an average atomic mass of 10.81 amu, has two stable isotopes: boron-10 (19.78%) and boron-11 (80.22%). Boron-10 has an atomic mass of 10.0129 amu; what is the atomic mass of boron-11?

Accepted Answer

The answer of Boron, which has an average atomic mass...

Question 18

Give an example of a nonmetal.

Accepted Answer

The answer of Give an example of a nonmetal....

Question 19

Give an example of an alkali metal.

Accepted Answer

The answer of Give an example of an alkali metal....

Question 20

In one sentence, describe the picture of the atom that emerged from the Rutherford-Geiger-Marsden experiment with alpha particles.

Accepted Answer

The answer of In one sentence, describe the picture of...

Quiz 2: Atoms, Ions, and Molecules: Matter Starts Here

The emission of a $\beta$ particle is associated with the __________

The average atomic mass of carbon is 12.01 amu. What is the average atomic mass of carbon in grams? (1 amu = 1.6605402 *10^-²⁷ kg)

What distinguishes one isotope from another?

Which one of the oxoacid formulas and names is not correctly matched?

According to the Big Bang theory, which statement about the origin of the elements is not correct?

Which one of the following acids has an incorrect formula or is not named correctly?

A __________ particle is a high-energy particle with a negative charge.

What is the correct symbol for an alpha particle?

Write the complete atomic symbol with both a superscript and a subscript for a sodium ion that contains 11 protons, 10 electrons, and 12 neutrons.

Nuclear reactors used for power generation require uranium enriched in uranium-235. What is the average atomic mass of enriched uranium consisting of exactly 3.0% uranium-235 (235.04 amu) and 97.0% uranium-238 (238.05 amu)?

Which one of the following acids has an incorrect formula or is not named correctly?

Give an example of a halogen.

Two neutrons were walking down the street. One said, "Wait a minute…I think I lost a __________!" The other one asked, "Are you sure?" The first replied, "Yes, I'm positive!"

Give an example of a metalloid (aka semimetal).

Give an example of an alkaline earth metal.

Which stellar nuclear reaction is not correctly written?

Boron, which has an average atomic mass of 10.81 amu, has two stable isotopes: boron-10 (19.78%) and boron-11 (80.22%). Boron-10 has an atomic mass of 10.0129 amu; what is the atomic mass of boron-11?

Give an example of a nonmetal.

Give an example of an alkali metal.

In one sentence, describe the picture of the atom that emerged from the Rutherford-Geiger-Marsden experiment with alpha particles.

Quiz 2: Atoms, Ions, and Molecules: Matter Starts Here

The emission of a β\betaβ particle is associated with the __________

The average atomic mass of carbon is 12.01 amu. What is the average atomic mass of carbon in grams? (1 amu = 1.6605402 *10-27 kg)

What distinguishes one isotope from another?

Which one of the oxoacid formulas and names is not correctly matched?

According to the Big Bang theory, which statement about the origin of the elements is not correct?

Which one of the following acids has an incorrect formula or is not named correctly?

A __________ particle is a high-energy particle with a negative charge.

What is the correct symbol for an alpha particle?

Write the complete atomic symbol with both a superscript and a subscript for a sodium ion that contains 11 protons, 10 electrons, and 12 neutrons.

Nuclear reactors used for power generation require uranium enriched in uranium-235. What is the average atomic mass of enriched uranium consisting of exactly 3.0% uranium-235 (235.04 amu) and 97.0% uranium-238 (238.05 amu)?

Which one of the following acids has an incorrect formula or is not named correctly?

Give an example of a halogen.

Two neutrons were walking down the street. One said, "Wait a minute…I think I lost a __________!" The other one asked, "Are you sure?" The first replied, "Yes, I'm positive!"

Give an example of a metalloid (aka semimetal).

Give an example of an alkaline earth metal.

Which stellar nuclear reaction is not correctly written?

Boron, which has an average atomic mass of 10.81 amu, has two stable isotopes: boron-10 (19.78%) and boron-11 (80.22%). Boron-10 has an atomic mass of 10.0129 amu; what is the atomic mass of boron-11?

Give an example of a nonmetal.

Give an example of an alkali metal.

In one sentence, describe the picture of the atom that emerged from the Rutherford-Geiger-Marsden experiment with alpha particles.

The emission of a $\beta$ particle is associated with the __________

The average atomic mass of carbon is 12.01 amu. What is the average atomic mass of carbon in grams? (1 amu = 1.6605402 *10^-²⁷ kg)