16 Questions
Which form of water is less dense than its liquid phase?
Solid
What is the pH value of neutral water?
7
Which compound is considered the most important inorganic compound?
Water
Which elements are categorized in groups and periods on the Periodic Table of Elements?
Both natural and artificial elements
Which group of elements is the most reactive among metals?
Group 1
Which group of elements is the most reactive among non-metals?
Group 17
Which group of elements is the most unreactive?
Group 18
How many periods are there on the Periodic Table of Elements?
8
Which particles make up an atom?
Protons, neutrons, and electrons
What is the charge of an atom?
Neutral
What are chemical formulas used for?
Describing chemical equations
What are ionic compounds formed between?
Positive and negative ions
Which type of compounds usually occur between two nonmetals?
Covalent compounds
What is the pH range of acids?
0-6.9
What is the pH range of bases?
7-14
What can chemical reactions result in?
Phase change, energy change, and color change
Study Notes
Water Properties
- Ice (solid water) is less dense than liquid water.
pH and Water
- The pH value of neutral water is 7.
Inorganic Compounds
- Water (H2O) is considered the most important inorganic compound.
Periodic Table of Elements
- Elements are categorized in groups (vertical columns) and periods (horizontal rows) on the Periodic Table.
- Metals are categorized in groups 1, 2, and 13-15, whereas non-metals are categorized in groups 14-16.
- There are 7 periods on the Periodic Table of Elements.
Atomic Structure
- An atom is made up of protons, neutrons, and electrons.
- An atom has no charge, as the number of protons (positive charge) equals the number of electrons (negative charge).
Chemical Formulas and Compounds
- Chemical formulas are used to represent the composition of a compound.
- Ionic compounds are formed between a metal and a non-metal.
- Covalent compounds are formed between two non-metals.
Acids and Bases
- The pH range of acids is less than 7.
- The pH range of bases is greater than 7.
Chemical Reactions
- Chemical reactions can result in the formation of a new substance or the release of energy.
Test your knowledge of chemistry with this quiz on atoms, chemical formulas, and chemical equations. Learn about the particles that make up atoms and how to describe chemical reactions using formulas and equations. Challenge yourself and expand your understanding of chemistry concepts.
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