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