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