- 1. Chemical bonds form when atoms
A) share or transfer electrons
B) gain protons
C) give up neutrons
D) combine nuclei
- 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 has a fixed composition
D) It consists of molecules
- 3. Ionic bonds form between
A) two nonmetals
B) any two elements
C) a metal and a nonmetal
D) two metals
- 4. Which of the following is not a property of an ionic compound?
A) ability to dissolve in water
B) malleability
C) high boiling point
D) high melting point
A) all of the choices
B) ionic compound
C) nonpolar compound
D) chemical compound
- 6. All covalent compounds
A) have high boiling points
B) are solid at room temperature
C) contain ions
D) consist of nonmetallic elements
- 7. Which alloy was made first?
A) steel
B) bronze
C) none of the choices
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) 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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