Unit I: Matter

What are chemical properties of matter?

• Chemical properties of matter only involve the color of a substance

• Chemical properties of matter refer to the physical appearance of a substance

• Chemical properties of matter describe how a substance interacts with other substances to form new substances.

• Chemical properties of matter are not related to how substances interact with each other

Give an example of a compound.

• Oxygen

• Carbon

• Nitrogen

• Water

How are pure substances classified?

• Based on size and weight

• Based on chemical composition as elements or compounds, and based on physical properties as elements, compounds, or alloys.

• Based on taste and smell

• Based on color and texture

What is the difference between a homogeneous and heterogeneous mixture?

• Homogeneous mixtures are always solid, while heterogeneous mixtures are always liquid.

• Homogeneous mixtures are always transparent, while heterogeneous mixtures are always opaque.

• Homogeneous mixtures have non-uniform composition, while heterogeneous mixtures have uniform composition.

• Homogeneous mixtures have uniform composition, while heterogeneous mixtures have non-uniform composition.

Define chemical properties of matter.

• Chemical properties of matter refer to the temperature at which a substance boils.

• Chemical properties of matter are related to the weight of a substance.

• Chemical properties of matter describe the physical appearance of a substance.

• Chemical properties of matter describe how a substance interacts with other substances to form new substances.

Name two types of compounds.

• Ionic compounds, Covalent compounds

• Molecular compounds

• Organic compounds

• Metallic compounds

Explain the classification of pure substances.

• Pure substances are classified into solids and liquids.

• Pure substances are classified into metals and non-metals.

• Pure substances are classified into elements and compounds.

• Pure substances are classified into organic and inorganic.

Provide an example of a homogeneous mixture.

• Sand and water mixture

• Sugar water solution

• Oil and water mixture

• Salt water solution

What are the characteristics of chemical properties of matter?

• Chemical properties of matter describe how substances interact with other substances to form new substances.

• Chemical properties of matter are constant and do not change.

• Chemical properties of matter are related to physical properties only.

• Chemical properties of matter do not involve interactions with other substances.

List the properties of an ionic compound.

• High melting and boiling points, conduct electricity when molten or in solution, crystalline solid at room temperature

• Low melting and boiling points, insulator in all states, liquid at room temperature

• Low melting and boiling points, conduct electricity in solid state, amorphous structure

• High melting and boiling points, non-crystalline structure, gas at room temperature