Chemistry of Life - Quiz

6. Which statement best describes a mixture?

• Contains 1 type of atom that is not chemically bonded to any other atoms.
• Contains 2 or more types of atoms that are chemically bonded together.
• Contains 2 or more types of atoms that are not chemically bonded together.
• Contains at least 3 types of atoms that are not chemically bonded together.

7. What is the difference between a molecule and a compound?

• Molecules are larger than compounds
• Molecule is more generic and can include elements in which two or more of the same atom are chemically bonded
• Compounds always contain carbon and hydrogen whereas molecules can contain other elements
• Compounds contain chemical bonds whereas molecules do not have any chemical bonds

8. Which statement best describes what a bond is?

• A permanent way of locking molecules together
• A way of linking atoms to existing compounds
• A lasting attraction between atoms, ions or molecules
• An attraction that is consistently formed between atoms of the same element

9) What is the element?

10) Name that element. (Neutral Atom, Cation, Anion, Isotope)

11) Charge (Neutral, Negative, Positive)

A combination of two or more substances that are not chemically combined.

• mixture

• element

• solvent

• solute

Explain why isotopes of the same element have different mass numbers.

• They have different numbers of protons.

• They have different numbers of neutrons.

• They have different numbers of electrons.

• They have different numbers of protons and electrons.

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DOK Level 2: Skill/Concept

Consider an atom with 11 protons, 12 neutrons, and 10 electrons. What is the charge of this ion?

• +1

• -1

• 0

• +2

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DOK Level 2: Skill/Concept

There are _____ protons in an atom of carbon-14.

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DOK Level 1: Recall