Determining the differences between chemical and physical changes

A look at cichlid fish in Lake Victoria This is the first in what I hope to be a series of postings.

Determining the differences between chemical and physical changes

Determining the differences between chemical and physical changes

Macroscopic patterns are related to the nature of microscopic and atomic-level structure. Introduction and Connection to the NGSS and Common Core In this lesson, students go through a series of 12 quick lab stations in order to practice identifying reactions as chemical or physical changes.

At each lab station, students not only identify the signs of a chemical change, but they also read reactant and product descriptions in order to identify changes in chemical and physical properties that occurred. Each station is quick, fun, and very specific to to standard MS-PS!

Science and Engineering Practices: When students look for patterns in data to identify the signs of a chemical change based on their qualitative observations, they do just that!

At each lab station, students use patterns in evidence to identify each reaction as chemical or physical. Students thus realize that patterns can be used to predict phenomena. Patterns Connecting to the Essential Question: What are you supposed to learn today?

And, what evidence can show how the physical and chemical properties of the substances change? Explain to students that we will again be working with Skill CH. Have students turn to their unit plans and silently read the skill. After reading the skill, students rank their current level of mastery on a scale of 1 to 4 4 being mastery.

Students in my room have already assessed themselves in the lesson prior to this; this would be an opportunity for the student to change their number if they felt their level of mastery had increased after the previous lesson. In my classroom, students frequently self-assess their level of understanding on each skill in the unit as we go.

As you can see from the image below, this student ranks has continually updated his level of mastery on each skill has his learning has developed. Students in my class have already had an introduction to the differences between chemical and physical reactions.

My students have already worked through the Skill CH. For a look at all the lessons that have led my students to this point and where we go from here check out the lessons in these units: Molecular Arrangement and Phase Changes: Focuses on Skills 1 - 4 of the Chemistry Unit Plan This unit is designed to answer the Essential Question, "How do particles combine into new substances?

What evidence can show how the physical and chemical properties of the substances change? It particularly focuses on types of matter, physical properties, phase changes, and factors that affect physical properties. It stresses group discussion, discourse and utilizing text references when engaging in argument.

Students utilize reading, writing, and speaking strategies in order to develop scientific literacy. Chemical Properties and Reactions: Focuses on Skills 4 - 6 of the Chemistry Unit Plan. This unit is also designed to answer the Essential Question, "How do particles combine into new substances?

This unit focuses on chemical properties and chemical reactions. Students analyze evidence and property changes that allow them to distinguish between chemical and physical reactions.

In addition, students investigate the Law of Conservation of Mass as they look at how bonds are broken and formed in chemical reactions. This unit is full of hands on labs and station rotations that will engage any middle school student in chemistry!

Chemical reactions result in a change of properties! Let the students follow them.

Summary of MCAT Subjects for the current MCAT format Salinity Concentration of dissolved salts found in a sample of water.
What is the difference between a physical change and a chemical change? Matter is conserved because atoms are conserved in physical and chemical processes.
Technical Glossary | Applied Materials When you have finished this page, try the Chemical and Physical Changes Quiz There are several differences between a physical and chemical change in matter or substances.
Physical and Chemical Changes The Pocket Guide presents key information and data in abbreviated tabular form for chemicals or substance groupings e.

In the previous two lessons Chemical Reactions Un-Notes and Chemical Physical Group Challengestudents have been developing an understanding of the difference between a chemical and physical reaction.

Before beginning the lab stations, review some of the important concepts with your students. What is the biggest different between a chemical and physical reaction?Physical changes and chemical changes have much in common in that you are looking at similar kinds of results.

The difference is whether the appearances or differences that you see are from a change in the condition of the material or from a .

In this lesson students will recognize evidence of a chemical reaction and differentiate between chemical and physical changes. Science and Engineering Practices (SP) This lesson will cover all aspects of the 5E model of inquiry. Change Matters: Physical and Chemical Changes lesson demonstrates how students can apply the process of comparing and contrasting to demonstrate the similarities and differences between physical and chemical changes in matter.

The students will then compare and contrast these changes, assisting them in understanding the different . There are two possible definitions for Physical and Chemical changes which I use in school: 1. A physical change is reversible, a chemical change is not.

For example, the freezing of water would be a physical change because it can be reversed, whereas the burning of wood is a chemical change - you. Physical and Chemical Changes.

When you have finished this page, try the Chemical and Physical Changes Quiz. There are several differences between a physical and chemical change in matter or substances.

Students will learn how to make the distinction between chemical changes and physical changes in matter.

> What is the difference between physical and chemical change in matter? + Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

How Are Physical and Chemical Properties Similar and Different? | initiativeblog.com