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