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Questions and Answers
What is the name for group 1A?
What is the name for group 1A?
Alkali Metals
What is the name for group 2A?
What is the name for group 2A?
Alkaline Earth Metals
What is the name for group 7A?
What is the name for group 7A?
Halogens
What is the name for group 8A?
What is the name for group 8A?
What kind of ions do metals form?
What kind of ions do metals form?
What kind of ions do nonmetals form?
What kind of ions do nonmetals form?
Nonmetals are located where on the periodic table?
Nonmetals are located where on the periodic table?
Which of the following is a molecular compound?
Which of the following is a molecular compound?
Which of the following is NOT a correct name-symbol combination?
Which of the following is NOT a correct name-symbol combination?
Identify the element that is a non-metal, a gas, and had an element symbol that starts with the letter 'A.'
Identify the element that is a non-metal, a gas, and had an element symbol that starts with the letter 'A.'
Which of the following statements about physical and chemical changes is FALSE?
Which of the following statements about physical and chemical changes is FALSE?
When an atom gains an electron, the resulting particle is called:
When an atom gains an electron, the resulting particle is called:
Which among the following statements is false?
Which among the following statements is false?
Mg is a member of which family?
Mg is a member of which family?
What is the charge on the ion formed by aluminum?
What is the charge on the ion formed by aluminum?
If you hold a solid piece of pure gallium metal in your hand, your body heat will melt the gallium into its liquid form. This illustrates which of the following?
If you hold a solid piece of pure gallium metal in your hand, your body heat will melt the gallium into its liquid form. This illustrates which of the following?
Carbon monoxide is considered which of the following?
Carbon monoxide is considered which of the following?
What is the name of the compound whose formula is Na2O?
What is the name of the compound whose formula is Na2O?
The names of the elements whose symbols are Si, P, Mn, and S are respectively:
The names of the elements whose symbols are Si, P, Mn, and S are respectively:
Which of the following statements is FALSE?
Which of the following statements is FALSE?
The ionic compound that forms between potassium and oxygen is:
The ionic compound that forms between potassium and oxygen is:
Suppose that in an ionic compound, 'M' represents a metal that could form more than one type of ion. In the formula MBr, the charge of the M ion would be:
Suppose that in an ionic compound, 'M' represents a metal that could form more than one type of ion. In the formula MBr, the charge of the M ion would be:
When an atom loses an electron, the resulting particle is called:
When an atom loses an electron, the resulting particle is called:
Which among the following elements does NOT exist as a diatomic molecule in nature?
Which among the following elements does NOT exist as a diatomic molecule in nature?
How many protons and electrons are present in O^2−?
How many protons and electrons are present in O^2−?
What is the name of the molecular compound SO3?
What is the name of the molecular compound SO3?
Which of the following elements has an atomic number of 4?
Which of the following elements has an atomic number of 4?
What is the name of CoS?
What is the name of CoS?
Which of the following is NOT a correct name, symbol combination?
Which of the following is NOT a correct name, symbol combination?
What is the atomic symbol for silver?
What is the atomic symbol for silver?
The elemental symbol S represents the element ________.
The elemental symbol S represents the element ________.
An atom containing 7 protons, 8 neutrons, and 7 electrons:
An atom containing 7 protons, 8 neutrons, and 7 electrons:
What is the formula for an ionic compound made of aluminum and oxygen?
What is the formula for an ionic compound made of aluminum and oxygen?
Which one of the following is a main-group metal element in period number 3 of the periodic table?
Which one of the following is a main-group metal element in period number 3 of the periodic table?
How many of each type of atoms are there in the formula NH4C2H3O2?
How many of each type of atoms are there in the formula NH4C2H3O2?
Which of the following elements has only 12 protons?
Which of the following elements has only 12 protons?
Which one of the following is a main-group element?
Which one of the following is a main-group element?
Group 8A elements are also called:
Group 8A elements are also called:
What is an element?
What is an element?
When a substance is a ______, its atoms vibrate in one position -- they are not free to roam around.
When a substance is a ______, its atoms vibrate in one position -- they are not free to roam around.
Type of matter in which all the smallest individual pieces are the same:
Type of matter in which all the smallest individual pieces are the same:
What is formed when two or more atoms are chemically joined together?
What is formed when two or more atoms are chemically joined together?
Use to indicate how many of each atom there are in a formula:
Use to indicate how many of each atom there are in a formula:
A substance that contains different types of atoms present in the same molecule:
A substance that contains different types of atoms present in the same molecule:
A substance whose particles can readily slip past each other:
A substance whose particles can readily slip past each other:
A substance whose particles are far apart and move very fast:
A substance whose particles are far apart and move very fast:
A substance that contains different atoms or molecules that are physically mixed together, but not chemically bonded to each other:
A substance that contains different atoms or molecules that are physically mixed together, but not chemically bonded to each other:
Study Notes
Periodic Table Groups
- Group 1A is known as Alkali Metals; these are highly reactive elements.
- Group 2A is called Alkaline Earth Metals; they are less reactive compared to alkali metals.
- Group 7A consists of Halogens, known for their high reactivity, especially with alkali metals.
- Group 8A refers to Noble Gases, which are inert and do not readily form compounds.
Ions and Chemical Behavior
- Metals typically form cations, positively charged ions.
- Nonmetals typically form anions, negatively charged ions.
- Nonmetals are predominantly located on the right side of the periodic table.
Molecular Compounds and Naming
- Nitrogen monoxide is identified as a molecular compound among the listed options.
- The formula Na2O is named sodium oxide.
- Carbon monoxide is classified as a molecular compound.
- K2O is the ionic compound formed from potassium and oxygen.
Charges and Atomic Structure
- Aluminum forms an ion with a charge of 3+.
- An atom that gains an electron becomes an anion.
- An atom that loses an electron becomes a cation.
- The ion O^2− has 8 protons and 10 electrons.
States of Matter
- A solid has a definite shape and volume; particles vibrate but do not move freely.
- A liquid allows particles to slip past each other; it has a definite volume but not a definite shape.
- A gas has particles that are far apart and move rapidly.
- Physical changes do not alter a substance's composition, whereas chemical changes do.
Elemental Symbols and Properties
- S represents sulfur; Ag is the atomic symbol for silver.
- Be has an atomic number of 4.
- A substance made of one type of atom is defined as an element.
Molecules and Compounds
- A molecule forms when two or more atoms are chemically joined together.
- A compound contains different types of atoms bonded together.
- Pure substances have uniform properties, while mixtures consist of multiple components that are not chemically bonded.
Miscellaneous Facts
- Subscripts indicate the number of each type of atom in a chemical formula.
- Nonmetals, such as neon (Ne), do not exist as diatomic molecules naturally.
- Magnesium (Mg) has 12 protons and is considered a main-group metal.
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