- 1. Chemical bonds form when atoms
A) share or transfer electrons
B) gain protons
C) combine nuclei
D) give up neutrons
- 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 consists of molecules
C) It forms crystals
D) It has a fixed composition
- 3. Ionic bonds form between
A) any two elements
B) a metal and a nonmetal
C) two metals
D) two nonmetals
- 4. Which of the following is not a property of an ionic compound?
A) ability to dissolve in water
B) high melting point
C) malleability
D) high boiling point
A) nonpolar compound
B) chemical compound
C) all of the choices
D) ionic compound
- 6. All covalent compounds
A) are solid at room temperature
B) contain ions
C) have high boiling points
D) consist of nonmetallic elements
- 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) 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) 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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