Question

critical read for properties and changes of matter
activate: first read of properties and changes of matter
overall purpose for reading this text:

• to identify and analyze the differences between physical and chemical properties of matter
• to identify and analyze the differences between physical and chemical changes of matter

skim & scan text features -

• what do you notice?
• what is the text about?

consider your schema on this topic.

• turn to your shoulder partner or learning group and discuss what connections you have to this topic from your own previous learning.

vocabulary self - evaluation

• procedure:

1. examine the list of words written in the first column.
2. put a \+\ next to each word you know well, and give an accurate example and definition of the word. your definition and example must relate to the unit of study.
3. place a \/\ to any words for which you can only write a definition or an example, but not both.
4. put a \-\ next to words that are new to you.

word	+	/	-	example	definition
chemical
property
matter
change
substance

Explanation:

Physical properties of matter can be observed or measured without changing the substance's identity, like color or density. A chemical property describes a substance's ability to undergo a chemical change, such as flammability. A physical change doesn't alter the chemical composition, like melting ice. A chemical change results in a new substance, like rusting iron. Matter is anything that has mass and takes up space. A property is a characteristic of matter. A change is an alteration in matter. A substance is a form of matter with a definite composition and distinct properties. For the vocabulary self - evaluation, if you are familiar with a word in the context of matter's properties and changes, mark it with '+', give an example like "Density is a physical property, e.g., lead is denser than wood" and define it. If you can only do one (define or give an example), mark '/', and if it's new, mark '-'.

Answer:

WORD	+	/	-	Example	Definition
chemical	+			Combustion is a chemical property. Wood burns in air.	A characteristic of a substance that describes its ability to undergo a chemical reaction and form new substances.
property	+			Color is a property of matter. A red apple has the property of redness.	A characteristic or quality of a substance or object.
matter	+			A book is matter as it has mass and takes up space.	Anything that has mass and occupies space.
change	+			Tearing paper is a physical change. Burning paper is a chemical change.	An alteration in the state or condition of matter.
substance	+			Water is a substance with the chemical formula H₂O.	A form of matter that has a definite composition and distinct properties.