Flashcards on Chemistry

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What is the Law of Conservation of Mass?

The Law of Conservation of Mass states that in any chemical reaction, the total mass of the reactants must equal the total mass of the products.

What is Avogadro's number?

Avogadro's number is the number of particles (atoms or molecules) in one mole of a substance, which is equal to 6.022 x 10²³.

What is the difference between an acid and a base?

Acids are substances that have a pH value lower than 7 and taste sour, while bases have a pH value greater than 7 and taste bitter.

What is the difference between an element and a compound?

An element is a pure substance made up of only one kind of atom, while a compound is a substance made up of two or more different kinds of atoms bonded together.

What is the structure of an atom?

An atom consists of a nucleus, which contains protons and neutrons, and electrons that orbit the nucleus in shells or energy levels.

What is the difference between an endothermic and exothermic reaction?

In an endothermic reaction, energy is absorbed from the surroundings, while in an exothermic reaction, energy is released into the surroundings.

What is stoichiometry?

Stoichiometry is the calculation of the quantities of reactants and products involved in a chemical reaction.

What are the properties of gases?

Gases are compressible, have no fixed shape, take up the space available to them, and diffuse quickly.

What is the difference between an oxidizing agent and a reducing agent?

An oxidizing agent is a substance that causes another substance to lose electrons, while a reducing agent is a substance that causes another substance to gain electrons.

What is a mole in chemistry?

A mole is a unit of measurement used in chemistry to express amounts of a substance, which is equivalent to Avogadro's number of particles.

What is the difference between a chemical reaction and a physical change?

In a chemical reaction, new substances are formed with different properties than the original substances, while in a physical change, the appearance or state of a substance changes without forming a new substance.

What are the types of chemical bonds?

The types of chemical bonds are ionic bonds, covalent bonds, and metallic bonds.

What is the difference between a homogeneous and heterogeneous mixture?

In a homogeneous mixture, the composition is uniform throughout, while in a heterogeneous mixture, the composition is not uniform throughout.

What is the periodic table?

The periodic table is a chart of the known elements that are organized according to their properties.

What is a chemical equation?

A chemical equation is a representation of a chemical reaction using chemical formulas and symbols.

What is the Law of Conservation of Mass?

The Law of Conservation of Mass states that in any chemical reaction, the total mass of the reactants must equal the total mass of the products.

What is Avogadro's number?

Avogadro's number is the number of particles (atoms or molecules) in one mole of a substance, which is equal to 6.022 x 10²³.

What is the difference between an acid and a base?

Acids are substances that have a pH value lower than 7 and taste sour, while bases have a pH value greater than 7 and taste bitter.

What is the difference between an element and a compound?

An element is a pure substance made up of only one kind of atom, while a compound is a substance made up of two or more different kinds of atoms bonded together.

What is the structure of an atom?

An atom consists of a nucleus, which contains protons and neutrons, and electrons that orbit the nucleus in shells or energy levels.

What is the difference between an endothermic and exothermic reaction?

In an endothermic reaction, energy is absorbed from the surroundings, while in an exothermic reaction, energy is released into the surroundings.

What is stoichiometry?

Stoichiometry is the calculation of the quantities of reactants and products involved in a chemical reaction.

What are the properties of gases?

Gases are compressible, have no fixed shape, take up the space available to them, and diffuse quickly.

What is the difference between an oxidizing agent and a reducing agent?

An oxidizing agent is a substance that causes another substance to lose electrons, while a reducing agent is a substance that causes another substance to gain electrons.

What is a mole in chemistry?

A mole is a unit of measurement used in chemistry to express amounts of a substance, which is equivalent to Avogadro's number of particles.

What is the difference between a chemical reaction and a physical change?

In a chemical reaction, new substances are formed with different properties than the original substances, while in a physical change, the appearance or state of a substance changes without forming a new substance.

What are the types of chemical bonds?

The types of chemical bonds are ionic bonds, covalent bonds, and metallic bonds.

What is the difference between a homogeneous and heterogeneous mixture?

In a homogeneous mixture, the composition is uniform throughout, while in a heterogeneous mixture, the composition is not uniform throughout.

What is the periodic table?

The periodic table is a chart of the known elements that are organized according to their properties.

What is a chemical equation?

A chemical equation is a representation of a chemical reaction using chemical formulas and symbols.

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