Elements And Chemical Bonds (Pt.1)

Test Description: Elements and Chemical Bonds (Pt.1)

Instructions: Answer all questions to get your test result.

1) Elements are organized on the periodic table in horizontal rows, called periods. What can periods tell us about the electron configuration of an atom of a particular element?

2) Elements are organized on the periodic table in vertical columns, called groups. What can groups tell us about the electron configuration of an atom of a particular element?

3) If I wanted to find out which elements on the periodic table have similar chemical properties and characteristics, which of the following would be the best approach?

4) There are three main regions of elements on the periodic table. Which of the following is NOT one?

5) Except for hydrogen, elements on the left side are metals. Metals are _____________.

6) Nonmetals are on the right side of the table. Nonmetals are _________________.

7) Elements rarely exist in pure form in nature. (True or False)

8) A __________________________ is a force that holds two or more atoms together in a molecule/compound.

9) How is a compound unique, when compared to a molecule?

10) A(n) _________________ tells us the number of atoms of each element in a compound.

11) Electrons closest to the nucleus are in the lowest energy level and electrons farthest from the nucleus are in the highest energy level. Valence electrons are always found in the ___________________.

12) Valence electrons are the only electrons in an atom of an element that participate in chemical bonds. (True or False)

13) Which of the following types of models includes only valence electrons?

14) Why are Noble Gases (Group 18 Elements) stable?

15) Sodium (Na) is a Group 1 element, in Period 3. Is Sodium stable?

16) Beryllium is a group 2, period 2 element. How many bonds can this atom form? (Tip: consider its Electron Dot Diagram)

17) Carbon is a group 14, period 2 element. How many bonds can this atom form? (Tip: consider its Electron Dot Diagram)

18) Nitrogen is a group 15, period 2 element. How many bonds can this atom form? (Tip: consider its Electron Dot Diagram)

19) A covalent bond is a chemical bond formed when two atoms ____________ valence electrons to fill their outer shells and become a stable molecule or compound.

20) A covalent bond would involve _________________.


*select an answer for all questions

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