- 1. Chemical bonds form when atoms
A) combine nuclei
B) gain protons
C) give up neutrons
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 consists of molecules
C) It is composed of just two elements
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 boiling point
B) high melting point
C) malleability
D) ability to dissolve in water
A) ionic compound
B) chemical compound
C) nonpolar compound
D) all of the choices
- 6. All covalent compounds
A) are solid at room temperature
B) contain ions
C) consist of nonmetallic elements
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) 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) false
B) true
- 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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