Honors Chemistry Midterm Review Verified Answers
Chemistry:
️ The study of matter, its properties, and the changes it undergoes.
Element:
️ A substance that cannot be broken down any further into simpler substances.
Compound:
️ Composed of two or more separate elements.
Ch...
✔️ The study of matter, its properties, and the changes it undergoes.
Element:
✔️ A substance that cannot be broken down any further into simpler substances.
Compound:
✔️ Composed of two or more separate elements.
Chemical Reaction:
✔️ A process that involves the rearrangement of the molecular or ionic structure of a substance.
Physical Change:
✔️ Changes that do not result in the formation of a new, different substance (changes in mass,
weight, density, size, physical state, melting/boiling point, solubility, color, odor).
Chemical Change:
✔️ Results in the formation of a new substance (e.g., burning, oxidation, acid reactions).
Cation:
✔️ Positively charged ion.
Anion:
✔️ Negatively charged ion.
What is the charge of Zr in the compound ZrBr₄?:
, ✔️ +4.
³⁷₁₇Cl⁻:
✔️ Atomic Mass: 37
✔️ Atomic Number: 17
✔️ Protons: 17
✔️ Electrons: 18
✔️ Neutrons: 20
✔️ Net Charge: 1.
Salts:
✔️ Neutral ionic compounds (e.g., NaCl).
Ionic Compounds:
✔️ Chemical compounds in which ions are held together by electrostatic forces; neutral overall but
can have positive or negative ions, typically made of a metal and a nonmetal (e.g., MgCl₂).
Molecular Compounds:
✔️ Formed when two or more atoms join together chemically; all compounds are molecules, but not
all molecules are compounds, typically made of two nonmetals (e.g., SF₆).
Dihydrogen Monoxide:
✔️ H₂O.
Trioxide Pentachloride:
✔️ O₃Cl₅.
Sodium Chloride:
✔️ NaCl.
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