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