Flashcards on Chemical Substances - Nature and Behavior

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What is a chemical substance?

A chemical substance is a form of matter that has a definite composition and distinct properties.

What are the two main types of chemical substances?

The two main types of chemical substances are elements and compounds.

What is an element?

An element is a pure substance that consists of only one type of atom and cannot be broken down into simpler substances.

Give an example of an element.

Oxygen (O), Hydrogen (H), and Iron (Fe) are examples of elements.

What is a compound?

A compound is a pure substance composed of two or more elements chemically combined in a fixed ratio.

Give an example of a compound.

Water (H2O), Carbon Dioxide (CO2), and Sodium Chloride (NaCl) are examples of compounds.

What are the physical properties of a substance?

Physical properties of a substance are characteristics that can be observed or measured without changing the substance's identity.

What are some examples of physical properties?

Examples of physical properties include color, density, melting point, boiling point, and conductivity.

What are the chemical properties of a substance?

Chemical properties of a substance describe how it interacts with other substances and changes into new substances.

What are some examples of chemical properties?

Examples of chemical properties include flammability, reactivity, and acidity.

What is a mixture?

A mixture is a combination of two or more substances that are not chemically combined.

What are the two main types of mixtures?

The two main types of mixtures are homogeneous mixtures and heterogeneous mixtures.

What is a homogeneous mixture?

A homogeneous mixture is a mixture that has a uniform composition and appearance throughout.

Give an example of a homogeneous mixture.

Air, saltwater, and vinegar are examples of homogeneous mixtures.

What is a heterogeneous mixture?

A heterogeneous mixture is a mixture that has a non-uniform composition and visible differences in appearance.

Give an example of a heterogeneous mixture.

Salad dressing, trail mix, and soil are examples of heterogeneous mixtures.

What is a chemical substance?

A chemical substance is a form of matter that has a definite composition and distinct properties.

What are the two main types of chemical substances?

The two main types of chemical substances are elements and compounds.

What is an element?

An element is a pure substance that consists of only one type of atom and cannot be broken down into simpler substances.

Give an example of an element.

Oxygen (O), Hydrogen (H), and Iron (Fe) are examples of elements.

What is a compound?

A compound is a pure substance composed of two or more elements chemically combined in a fixed ratio.

Give an example of a compound.

Water (H2O), Carbon Dioxide (CO2), and Sodium Chloride (NaCl) are examples of compounds.

What are the physical properties of a substance?

Physical properties of a substance are characteristics that can be observed or measured without changing the substance's identity.

What are some examples of physical properties?

Examples of physical properties include color, density, melting point, boiling point, and conductivity.

What are the chemical properties of a substance?

Chemical properties of a substance describe how it interacts with other substances and changes into new substances.

What are some examples of chemical properties?

Examples of chemical properties include flammability, reactivity, and acidity.

What is a mixture?

A mixture is a combination of two or more substances that are not chemically combined.

What are the two main types of mixtures?

The two main types of mixtures are homogeneous mixtures and heterogeneous mixtures.

What is a homogeneous mixture?

A homogeneous mixture is a mixture that has a uniform composition and appearance throughout.

Give an example of a homogeneous mixture.

Air, saltwater, and vinegar are examples of homogeneous mixtures.

What is a heterogeneous mixture?

A heterogeneous mixture is a mixture that has a non-uniform composition and visible differences in appearance.

Give an example of a heterogeneous mixture.

Salad dressing, trail mix, and soil are examples of heterogeneous mixtures.

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