School Improvement in Maryland

Using the State Curriculum: Science, Grade 5

Skills and Processes | Earth/Space | Life | Chemistry | Physics | Environmental
Clarifications: Each clarification provides an explanation of an indicator/objective to help teachers better understand the skills and/or concepts.

Standard 4.0 Chemistry

Topic D. Physical and Chemical Changes

Indicator 1. Provide evidence to illustrate that when a new material is made by combining two or more materials, its properties are different from the original materials.

Objective a. Investigate and describe what happens to the properties of materials when several materials are combined to make a mixture, such as table salt and pepper; various kinds of nuts, chocolate pieces, and coconut; sugar dissolved in milk

Clarification

When materials are physically combined, they form a mixture. In mixtures, the parts blend together without forming a new substance. The materials in a mixture keep their original properties.

A solution is a mixture that is blended completely and can be separated into the original substances using one or more properties (color, shape, density, boiling point, solubility).

Saltwater is a mixture of salt dissolved in water. This is an example of a physical change since no new materials were formed in the process. This mixture could be separated by evaporating the water, leaving the salt behind.
/instruction/clarification/science/grade5/xml/4D1a.xml
Resources for Objective 4.D.1.a:
CLARIFICATIONS | Lesson Seeds | Public Release Items |