- 1. Chemical bonds form when atoms
A) combine nuclei
B) gain protons
C) share or transfer electrons
D) give up neutrons
- 2. A mystery substance is known to be a chemical compound. What can you infer about the substance?
A) It is composed of just two elements
B) It forms crystals
C) It consists of molecules
D) It has a fixed composition
- 3. Ionic bonds form between
A) two metals
B) a metal and a nonmetal
C) two nonmetals
D) any two elements
- 4. Which of the following is not a property of an ionic compound?
A) high melting point
B) ability to dissolve in water
C) high boiling point
D) malleability
A) nonpolar compound
B) ionic compound
C) all of the choices
D) chemical compound
- 6. All covalent compounds
A) have high boiling points
B) consist of nonmetallic elements
C) are solid at room temperature
D) contain ions
- 7. Which alloy was made first?
A) none of the choices
B) bronze
C) steel
D) brass
- 8. All chemical bonds involve two atoms sharing electrons
A) false
B) true
- 9. The 3 in NH3 is the atomic number of hydrogen
A) true
B) false
- 10. Positive ions form when atoms lose electrons
A) true
B) false
- 11. Metallic bonds are between metals and nonmetals
A) false
B) true
- 12. A unique substance that forms when elements combine chemically is a(n) ___________.
- 13. Atoms are held together by ______________.
- 14. An ionic bond forms when atoms ________ electrons.
- 15. Bonds that form between two nonmetals are called ____________.
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