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1.

the__ smallest unit of matter:
the__ smallest unit of matter
2.
two__ atoms held together by an ionic bond:
two__atoms held together by an ionic bond
3.
two__atoms held together by a covalent bond:
two__atoms held together by a covalent bond
4.
Si__
Si__
5.
NaCl__
NaCl__
6.
CO2__

:
CO2__

3 answers

Here are the answers to your prompts:

  1. The atom is the smallest unit of matter.
  2. Two ions held together by an ionic bond.
  3. Two atoms held together by a covalent bond.
  4. Si (Silicon)
  5. NaCl (Sodium Chloride)
  6. CO2 (Carbon Dioxide)

Let me know if you need further assistance!

and the answers choices is

a. Atom

b. compound

c. molecule

Based on the provided answer choices, here are the correct completions for each statement:

  1. The atom is the smallest unit of matter.

    • Answer: a. Atom

  2. Two atoms held together by an ionic bond:

    • Answer: b. compound (Since two atoms held together by an ionic bond form a compound.)

  3. Two atoms held together by a covalent bond:

    • Answer: c. molecule (Since two atoms bonded covalently form a molecule.)

  4. Si (represents Silicon) does not align with any of the answer choices as it is just an element.

  5. NaCl (represents Sodium Chloride) is a compound:

    • Answer: b. compound

  6. CO2 (represents Carbon Dioxide) is also a molecule:

    • Answer: c. molecule

To summarize the answers:

  1. a. Atom
  2. b. compound
  3. c. molecule
  4. (N/A)
  5. b. compound
  6. c. molecule

Let me know if you need any more help!