Periodic Table And Atomic Structure MCQs Quiz Multiple Choice Questions & Answers

1. A carbon atom with 6 protons, 6 electrons, and 6 neutrons would have a mass number of

1. 6
2. 18
3. 12
4. 15

2. If an isotope of uranium, uranium-235, has 92 protons, how many protons does the isotope uranium-238 have?

1. 92
2. 95
3. 143
4. 146

3. The properties of elements in a horizontal row of the periodic table follow

1. a nonrepeating pattern.
2. a periodic pattern.
3. no pattern.
4. an unpredictable pattern.

4. The number at the top is the

1. atomic number.
2. element name.
3. atomic mass.
4. chemical symbol.

5. How would you describe the nucleus?

1. dense, positively charged
2. mostly empty space, positively charged
3. tiny, negatively charged
4. dense, negatively charged

6. The carbon group has two metalloids, both of which are used to make

1. dinnerware.
2. foil.
3. cans.
4. computer chips.

7. What is the meaning of the word atom?

1. dividable
2. invisible
3. hard particles
4. not able to be divided

8. Transition metals are

1. good conductors of thermal energy.
2. more reactive than alkali metals.
3. not good conductors of electric current.
4. used to make aluminum.

9. A horizontal row on the periodic table is called a(n)

1. group.
2. family.
3. period.
4. atomic number.

10. Where are electrons likely to be found?

1. in the nucleus
2. in electron clouds
3. mixed throughout an atom
4. in definite paths

11. Elements on the periodic table are arranged in order of

1. increasing density.
2. decreasing density.
3. increasing atomic number.
4. decreasing atomic number.

12. The elements to the right of the zigzag line on the periodic table are called

1. metalloids.
2. conductors.
3. metals.
4. nonmetals.

13. Elements lying along the zigzag line on a periodic table are

1. metals
2. nonmetals
3. metalloids
4. noble gases

14. Most of the elements in the periodic table are

1. metals.
2. metalloids.
3. gases.
4. nonmetals.

15. Which of the following has the least mass in an atom?

1. nucleus
2. proton
3. neutron
4. electron

16. The smallest particle into which an element can be divided and still have the properties of that element is called a(n)

1. nucleus.
2. electron.
3. atom.
4. neutron.

17. The elements in each vertical column on the periodic table usually have similar properties and are called a(n)

1. period.
2. group.
3. element.
4. property.

18. How do the physical and chemical properties of the elements change?

1. periodically within a group
2. periodically across each period
3. periodically within a family
4. periodically across each group

19. Every atom of a given element has the same number of

1. protons.
2. neutrons.
3. electrons.
4. isotopes.

20. Most metals are

1. solid at room temperature.
2. bad conductors of electric current.
3. dull.
4. not malleable.

21. Periodic describes

1. something that occurs at regular intervals.
2. something that occurs very rarely.
3. something that occurs frequently.
4. something that occurs three or four times a year.

22. Which one of the following tells the physical state of an element at room temperature?

1. the atomic number
2. the color of the chemical symbol
3. the atomic mass
4. the element name

23. Which of the following statements describes most metals?

1. They are easily shattered.
2. They are gases at room temperature.
3. They are dull.
4. They are good conductors of electric current.

24. Which of the following is a property of alkali metals?

1. They are so hard they cannot be cut.
2. They are very reactive.
3. They are stored in water.
4. They have few uses.

25. Which statement is true about isotopes of the same element?

1. They have the same number of protons.
2. They have the same number of neutrons.
3. They have a different atomic number.
4. They have the same mass.