Basic Chemistry Worksheet - WordMint - Free Printable

Problem Analysis:

The task is to match the definitions in the left column with the correct terms or concepts in the right column. This involves understanding basic chemistry terminology and concepts.

Solution:

Let's go through each question and provide the correct answer along with an explanation.

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#### 1. Water bonding to water
- Explanation: Water molecules bond to other water molecules through hydrogen bonds, which are a type of intermolecular force.
- Answer: S. intermolecular

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#### 2. A compound having an uneven surface charge / both charges
- Explanation: A compound with an uneven distribution of charge (both positive and negative regions) is called a polar compound.
- Answer: A. polar

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#### 3. Smallest complete unit of matter
- Explanation: The smallest unit of matter that retains the chemical properties of an element is an atom.
- Answer: O. atom

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#### 4. Anything that has mass and takes up space
- Explanation: Matter is defined as anything that has mass and occupies space.
- Answer: V. matter

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#### 5. Amount of matter
- Explanation: Mass is a measure of the amount of matter in an object.
- Answer: F. mass

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#### 6. Subatomic particle with no charge
- Explanation: Neutrons are subatomic particles found in the nucleus of an atom and have no charge.
- Answer: C. neutron

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#### 7. Number of protons
- Explanation: The number of protons in an atom is called the atomic number.
- Answer: Q. atomic number

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#### 8. Subatomic particle that identifies an element
- Explanation: The number of protons in an atom determines the identity of the element. Protons are the defining subatomic particles for elements.
- Answer: H. proton

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#### 9. Water bonding to something different
- Explanation: When water molecules bond to other types of molecules, it is called adhesion.
- Answer: W. adhesion

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#### 10. "Pure" / can't be broken down chemically
- Explanation: An element is a pure substance that cannot be broken down into simpler substances by chemical means.
- Answer: G. element

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#### 11. Atom with equal # of protons and electrons
- Explanation: An atom with an equal number of protons and electrons is electrically neutral.
- Answer: M. neutral

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#### 12. Atom satisfying the octet rule (8e- in outer shell)
- Explanation: An atom with a full outer shell (8 electrons) is considered stable.
- Answer: I. stable

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#### 13. An atom with an electrical charge
- Explanation: An atom with an electrical charge is called an ion.
- Answer: L. ion

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#### 14. Same element different number of neutrons
- Explanation: Isotopes are atoms of the same element that have different numbers of neutrons.
- Answer: Z. isotope

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#### 15. Electrostatic bond holding molecule to molecule
- Explanation: Intermolecular forces are electrostatic interactions that hold molecules together.
- Answer: S. intermolecular

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#### 16. "Opposites attract"
- Explanation: Opposite charges attract each other due to electrostatic forces.
- Answer: B. electrostatic

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#### 17. Strongest bond type
- Explanation: Covalent bonds are the strongest type of chemical bond because they involve the sharing of electrons between atoms.
- Answer: D. ionic (Note: Ionic bonds are also strong, but covalent bonds are generally stronger in many cases.)

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#### 18. Weakest bond type
- Explanation: Hydrogen bonds are the weakest type of intermolecular force.
- Answer: R. buffer (This might be a typo; typically, hydrogen bonds are the weakest, but "buffer" doesn't fit well here.)

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#### 19. Any pH above 7
- Explanation: A pH above 7 indicates a basic solution.
- Answer: P. base

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#### 20. Outer shell electrons
- Explanation: Valence electrons are the electrons in the outermost shell of an atom.
- Answer: J. valence

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#### 21. A base has more ______ ions
- Explanation: Bases have more hydroxide ions (\( \text{OH}^- \)).
- Answer: X. negative

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#### 22. An acid has more ______ ions
- Explanation: Acids have more hydrogen ions (\( \text{H}^+ \)).
- Answer: E. positive

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#### 23. Bonds (covalent-ionic) hold molecule together
- Explanation: Intramolecular forces are the bonds that hold atoms within a molecule together.
- Answer: T. intramolecular

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#### 24. Two or more elements chemically bonded together
- Explanation: A compound is formed when two or more different elements are chemically bonded together.
- Answer: K. compound

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#### 25. Won't allow large or quick pH change
- Explanation: A buffer is a solution that resists changes in pH when small amounts of acid or base are added.
- Answer: R. buffer

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#### 26. Protons and neutrons within the nucleus
- Explanation: Protons and neutrons are collectively known as nucleons, which reside in the nucleus of an atom.
- Answer: Y. atomic mass (This might be a mislabel; "nucleon" would be more accurate, but "atomic mass" is related to the mass of protons and neutrons.)

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Final Answer:

\[
\boxed{
\begin{array}{ll}
1. & S. \text{intermolecular} \\
2. & A. \text{polar} \\
3. & O. \text{atom} \\
4. & V. \text{matter} \\
5. & F. \text{mass} \\
6. & C. \text{neutron} \\
7. & Q. \text{atomic number} \\
8. & H. \text{proton} \\
9. & W. \text{adhesion} \\
10. & G. \text{element} \\
11. & M. \text{neutral} \\
12. & I. \text{stable} \\
13. & L. \text{ion} \\
14. & Z. \text{isotope} \\
15. & S. \text{intermolecular} \\
16. & B. \text{electrostatic} \\
17. & D. \text{ionic} \\
18. & R. \text{buffer} \\
19. & P. \text{base} \\
20. & J. \text{valence} \\
21. & X. \text{negative} \\
22. & E. \text{positive} \\
23. & T. \text{intramolecular} \\
24. & K. \text{compound} \\
25. & R. \text{buffer} \\
26. & Y. \text{atomic mass} \\
\end{array}
}
\]