1. Distinguish between an atom and an element? A. The term \"atom\" is used for

Question

1. Distinguish between an atom and an element?

A. The term "atom" is used for submicroscopic particles in a sample. "Atoms" consist of "elements." The "element" is another term for the "elementary particle."

B. The term "element" is used for microscopic and macroscopic samples. The samples consist of "atoms." The "atom" is a submicroscopic particle in a sample.

C. "Atom" and "element" are convertible terms.

2. Distinguish between atomic number and mass number?

A. Atomic number is the total number of protons and neutrons in the nucleus. Mass number is the number of protons in the nucleus.

B. Atomic number is the number of protons in the nucleus. Mass number is the total number of protons and neutrons in the nucleus.

C. Atomic number is the number of neutrons in the nucleus. Mass number is the total number of protons and neutrons in the nucleus.

D. Atomic number is the number of protons in the nucleus. Mass number is the total number of neutrons in the nucleus.

3. What happens to the properties of elements as you go across any period of the periodic table?

A. Across any period, the properties of elements change without any definite dependence on position.

B. The properties of elements do not change as you go across any period of the periodic table.

C. Across any period, the properties of elements change gradually.

4. What is a practical application of the wave nature of an electron?

A. Spectroscope

B. Scanning probe microscope

C. Electron microscope

D. Optial Microscope

5. Which electrons are most responsible for the properties of an atom?

A. The electrons in the innermost shell of an atom.

B. The electrons in the intermediate filled shells of an atom.

C. The electrons in the outermost shell of an atom.

D. The electrons in every shell of an atom are equally responsible for the properities of an atom.

Explanation / Answer

1) B. The term "element" is used for microscopic and macroscopic samples. The samples consist of "atoms." The "atom" is a submicroscopic particle in a sample.

2)B. Atomic number is the number of protons in the nucleus. Mass number is the total number of protons and neutrons in the nucleus.

3)C. Across any period, the properties of elements change gradually.

4)C. Electron microscope

5)C. The electrons in the outermost shell of an atom.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.