Chapter 2- Matter

What is a chemical reaction?

• A chemical reaction is a process that involves the transformation of one substance into another substance with different properties, but the same chemical formula.

• A chemical reaction is a process that involves the transformation of one substance into another substance with the same properties.

• A chemical reaction is a process that involves the transformation of one substance into multiple substances with the same properties.

• A chemical reaction is a process that involves the transformation of one or more substances into different substances with different properties.

Give an example of a chemical reaction.

• Carbon dioxide reacting with water to form carbonic acid.

• Hydrogen gas reacting with oxygen gas to form water

• Sodium chloride reacting with silver nitrate to form silver chloride and sodium nitrate.

• Methane reacting with oxygen gas to form carbon dioxide and water.

What are physical properties of matter?

• Characteristics that can be observed or measured with changing the substance's composition.

• Characteristics that are only observable under a microscope.

• Characteristics that are determined by the substance's color.

• Characteristics that can be observed or measured without changing the substance's composition.

Name three physical properties of water.

• Solid at room temperature, low boiling point, poor solvent.

• Gas at room temperature, low boiling point, good solvent.

• Solid at room temperature, high boiling point, poor solvent.

• Liquid at room temperature, high boiling point, good solvent

What is a mixture?

• A combination of two or more substances that are chemically bonded together.

• A combination of two or more substances that are not chemically bonded together.

• A substance that cannot be separated into its constituent parts.

• A single substance that is chemically bonded together.

Give an example of a homogeneous mixture.

• Milk

• Concrete

• Saltwater

• Oil

What is a solution?

• A solution is a type of liquid.

• A solution is a mathematical equation.

• A solution is a temporary fix to a problem.

• A solution is a means of solving a problem or addressing a challenge.

What is the solute in a saltwater solution?

• salt

• water

• sugar

• oil

What is the solvent in a lemonade solution?

• carbonated water

• water

• sugar

• lemon juice

What is the difference between a mixture and a solution?

• A mixture is a combination of substances that are chemically combined, while a solution is a type of mixture where one substance is dissolved in another substance.

• A mixture is a combination of substances that are physically combined, while a solution is a type of mixture where one substance is dissolved in another substance.

• A mixture is a type of solution where one substance is dissolved in another substance, while a solution is a combination of substances that are physically combined.

• A mixture is a type of solution where one substance is dissolved in another substance, while a solution is a combination of substances that are chemically combined.