Introduction to Matter

Introduction to Matter

This section describes the kinds of properties used to describe matter. It also defines elements and contrasts compounds and mixtures.

Use Target Reading Skills

Write a definition of each Key Term in your own words.

matter: Anything that has mass and takes up space.

chemistry: The study of matter,particles and their alterations. substance: Matter with specific properties.

physical property: An external property of an object such as size,color,hardness etc.

chemical property: A property of matter that has to do with its internal composition.

element: A substance that cannot be broken down into more fundamental substance, the periodic table contains them all.

atom: Basic unit of an element.

chemical bond: An attraction between atoms molecule: A group of atoms bonded together

compound: A substance composed of two or more different atoms

chemical formula: A set of chemical symbols that shows a type of compound

mixture: A substance made by joinning other substances together

heterogeneous mixture: Mixture of substances that are not physically alike

homogeneous mixture: Mixture of substances that are physically alike

solution: Homogenous mixture of only 1 phase

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Introduction to Matter

Name _____Jose André M._____________ Date ______11 feb, 2015____ Class __8A____

Introduction to Matter Guided Reading and Study Describing Matter (continued)

Properties of Matter

1. The study of the properties of matter and how matter changes is called _______chemisty_________.

2. Is the following sentence true or false? Table sugar and table salt are pure substances. __________True________

3. A(n) ___________physical______ property is a characteristic of a pure substance that can be observed without changing the substance into something else.

4. Complete the table by classifying each property as either a physical or chemical property.

Properties of Matter

Property

Physical or Chemical?

Ability to burn

a. Chemical

Color

b. Physical

Flexibility

c. Physical

Ability to tarnish

d. Chemical

Ability to freeze

e. Physical

Ability to rust

f. Chemical

Elements

5. A pure substance that cannot be broken down into any other substances by chemical or physical means is a(n) ______element_______.

6. Is the following sentence true or false? The basic particle from which all elements are made is a molecule. __________atoms_______

7. When atoms combine, the force of attraction that holds them together is a(n) ________chemical bond_______.

8. How many atoms of hydrogen are in this water molecule? _________2____________

© Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved.

O HH

Name _____Jose André M.____________ Date ______Feb 11, 2015______ Class __8A_

Introduction to Matter uided

9. What is a compound?

A substance composed of two or more different atoms.

What is the ratio of atoms in carbon dioxide, or C? CO2

10. What is the chemical formula of carbon monoxide? ___________CO1________________

11. Is the following sentence true or false? When elements chemically combine, they form compounds that have properties that are similar to those of the uncombined elements. ______False____

Mixtures

13. A(n) _____Homogeneus Mixture_____ is made of two or more substances that are together in the same place but are

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