Chapter 6 Vocab

What is a substance in scientific terms?

• A mixture of different elements

• A single kind of matter that is pure and possesses a specific set of properties

• Any physical object

• A type of chemical reaction

What does the term 'physical property' refer to?

• A property that changes the chemical nature of matter

• A characteristic that can only be observed under a microscope

• A characteristic of matter that can be observed or measured without changing the type of matter

• A property related to temperature only

What is a physical change?

• A change that alters the chemical bonds within a substance

• An event that alters the form or size of matter but does not change the type of matter

• A change that results in the formation of a new substance

• A change that cannot be reversed

What defines a chemical bond?

• A reaction that forms a new substance

• The mixing of two elements

• The force of attraction that holds atoms together within a molecule

• A type of physical change

Which statement best describes a mixture?

• A single substance that cannot be separated into simpler substances

• A combination of two or more substances that can be physically separated

• A chemical reaction between two substances

• A new substance with chemical bonds

What is meant by 'soluble'?

• Capable of being melted

• Capable of being frozen

• Able to be dissolved in a given solvent

• Unable to react with other chemicals

What does 'insoluble' mean?

• Not capable of being dissolved in a given solvent

• Capable of dissolving any substance

• Highly reactive with solvents

• Only soluble in water

What occurs during a chemical change?

• A temporary change in physical appearance

• A change that can be easily reversed

• An event that rearranges chemical bonds and forms one or more new substances with different properties

• A change that does not affect the chemical structure

What is a chemical property?

• A property that can be observed without changing the substance

• A characteristic that describes when or how a substance will interact with other substances

• A physical attribute of a substance

• The color or odor of a substance

What does 'combustibility' refer to?

• The ability to dissolve

• The ability to freeze

• The ability to burn

• The ability to change states from solid to liquid