Question

Identifying Physical and Chemical Changes.Matter has both physical and chemical properties and can undergo physical or chemical changes. Physical properties are those that a substance displays without changing its composition, whereas chemical properties are evident only during a chemical change (also called a chemical reaction). In contrast, when a substance undergoes a physical change, it may change appearance, but not its composition.Part A: Classify each of the changes as a physical change or a chemical change.Part B: Classify each of the properties as a physical property or a chemical property.

Answer 1

Answer: Part A: Physical change: Status changes of matter

chemical change: Any Chemical reaction

Part B: Physical property: Color, odor, etc

Chemical property: Flammability

Step-by-step explanation:

Part A: A physical change: It´s change of form but not chemical composition.

Examples of Physical change are the Status changes of matter like boiling, melting, chooping wood, breaking a bottle and shredding paper.

A chemical change: It´s a change in the chemical composition of the compounds and generate new ones. That is called "chemical reaction" and it implies a rearrange of atoms generating new compounds.

Examples of chemical change are oxidation of Iron, burning, cooking, digesting food, rusting of iron.

Part B: Physical property: Are properties that can be measured or observed directly with our senses

Examples of physical Property: density,, appearance, texture, polarity, color, odor, melting point, solubility.

Chemical property: Are properties that can be observed when tey participate in a chemical reaction.

Examples of chemical Property: Reactivity , Radioactivity, Flammability , Acidity or basicity