- 1. Chemical bonds form when atoms
A) give up neutrons
B) gain protons
C) share or transfer electrons
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 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 boiling point
B) ability to dissolve in water
C) malleability
D) high melting point
A) chemical compound
B) nonpolar compound
C) ionic compound
D) all of the choices
- 6. All covalent compounds
A) have high boiling points
B) are solid at room temperature
C) consist of nonmetallic elements
D) contain ions
- 7. Which alloy was made first?
A) steel
B) none of the choices
C) bronze
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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