Physical & Chemical Changes

Slides:

Advertisements

Similar presentations

Seconds Remaining: Many chemical reactions occur around the home. – Describe one chemical.

Advertisements

Changing Matter Physical & Chemical Changes Everything that you need to write down from this powerpoint is underlined and in red!

Physical & Chemical Changes

ENDOTHERMIC AND EXOTHERMIC REACTIONS. EXOTHERMIC REACTIONS Chemical Reactions that RELEASE heat with the products. You may see an exothermic reaction.

Evidence of Chemical Reactions

Properties and Changes. Physical Properties Can be observed or measured. Density Color Odor Taste Hardness Melting point Boiling point Extensive or Intensive?

Matter Flowchart MATTER Can it be physically separated? Homogeneous Mixture (solution) Heterogeneous MixtureCompoundElement MIXTUREPURE SUBSTANCE yesno.

Section 1Chemical Reactions 〉 When do chemical reactions take place? 〉 Chemical reactions occur when substances undergo chemical changes to form new substances.

Physical and Chemical Properties and Changes. Matter: anything that has mass and takes up space –Mass – the amount of matter in something –Volume – the.

Physical and Chemical Properties and Changes. Physical Properties Any characteristic of a material that you can observe easily without changing the substance.

Physical and chemical changes. Physical Property: A characteristic of that can be measured without changing the chemical composition of a substance. Ex.

Chemical and physical properties

Changing Matter Physical & Chemical Reactions NOTES.

Chemical Change: Occurs when one or more substances are changed into new substances with different properties; cannot be undone by physical means.

Physical & Chemical Changes

Changing Matter Physical & Chemical Changes. Matter has properties Two basic types of properties that we can associate with matter. Physical properties.

Changing Matter. Matter can be described in terms of two kinds of properties: Physical properties Chemical properties.

Key terms REVIEW. IN YOUR GROUPS, SEE HOW MANY TERMS YOU CAN DEFINE… MatterChemistrySubstancePhysical property Chemical propertyElementAtom Chemical bond.

Properties of Matter. Make a T chart in your spiral Classify each of the following as physical or chemical Gas productionTarnishing SouringExpanding CoolingHeating.

What is a property of matter? Characteristic of that type of matter Can be physical or chemical property Can be observed using your senses Cannot be observed.

Composition of Matter Chapter 2 The students will learn about the: difference between elements and compounds, types of mixtures and to distinguish between.

Physical/Chemical Changes. Physical Properties… Any property of matter that can be measured without changing its chemical nature is known as a PHYSICAL.

Chemical Change: Occurs when one or more substances are changed into new substances with different properties; cannot be undone by physical means.

October 20, 2015 Day 2 Science Starters Sheet 1. Please have these Items on your desk. Science Starter: Under the document camera Agenda.

The Nature of Chemical Reactions Chapter 7.1 Notes.

Chemical Equations Chapter What is a chemical reaction? We represent chemical change with a chemical reaction. Evidence that a chemical reaction.

Changing Matter Physical & Chemical Changes. Matter Matter : Anything that has a mass and takes up space.

Physical and Chemical Changes Everything that has mass and volume is called matter. Everything is made of matter.

January 14, 2014 Day 2 Science Starters Sheet 1. Please have these Items on your desk. AR Book 2- Science Starter: Vocabulary words Chemical Property Physical.

{ Changing Matter Physical & Chemical Changes. Two basic types of properties that we can associate with matter.  Physical properties  Chemical properties.

What do you think a physical property is?

Chemical and physical properties

Forming New Substances

What is a physical characteristic? What is a chemical characteristic?

Under the document camera

What do you think a chemical property is?

Bell work: 12/2/13 Would you classify eating turkey as a chemical change or physical change? Why?

Properties & Changes of Matter

Physical & Chemical Changes

Changing Matter Matter can be changed two ways: Physically Chemically

Under the document camera

Unit 2 Matter I hope this is what we were supposed to do, please let me know what you think.

Evidence of a Chemical Reaction

Physical & Chemical Changes

Physical and Chemical Changes

The Law of Mass Conservation & Energy in Reactions

Physical & Chemical Changes

Physical & Chemical Changes

Physical & Chemical Properties and Changes

Forming New Substances

Unit 2 Matter I hope this is what we were supposed to do, please let me know what you think.

Physical Changes Physical Change – a substance changes in form but not in chemical composition. In a physical change no new substance is produced. Particles.

Monday, 10/31 Day 2 Fill out your Agenda. Science Starter:

Energy Changes in Reactions

Forming New Substances

Friday, 10/28 Day 1 Fill out your Agenda. Science Starter:

Unit A Section 3.0.

Changing Matter Matter can be changed two ways: Physically Chemically

Evidence of Chemical Change

Properties & Changes of Matter

The Law of Mass Conservation & Energy in Reactions

Unit 2 Matter I hope this is what we were supposed to do, please let me know what you think.

Chemical & Physical Changes

Properties & Changes of Matter

Physical & Chemical Changes

Forming New Substances

Law of Conservation of Mass

7.3 Energy Changes In Reactions

Unit 2 Matter I hope this is what we were supposed to do, please let me know what you think.

Forming New Substances

Presentation transcript:

Physical & Chemical Changes Changing Matter Physical & Chemical Changes

Matter can be changed two ways Physically Physical reaction Physical change Chemically Chemical reaction Chemical change

Physical Changes Do NOT CHANGE THE TYPE OF MATTER Nothing new or different is formed Could be a change in: Mass Volume Density Change in state Color Shape Size

Examples of Physical Changes Boiling Freezing Dissolving Breaking Making a mixture 2 or more types of matter (substances) mixed together Not in specific amounts Can be separated physically

Bellringer What is a physical change?

Topic: Chemical Changes EQ: What is a Chemical Change?

Bellringer 10/15/13 What is a Chemical Change?

Picture from www.chem4kids.com Chemical Changes The composition of the substance changes. The substances present at the beginning of the change are not present at the end; new substances are formed. The change cannot be “undone.” Picture from www.chem4kids.com

Chemical Changes Evidence of a chemical reaction Formation of gas Formation of precipitate Change in color Change in energy Endothermic Absorbs heat energy (gets cold) Exothermic Releases heat energy (gets hot)

Chemical Changes Atoms are re-arranged, NOT created or destroyed

Law of Conservation of Matter Matter is conserved  type of atoms does not change Nothing is created or destroyed

Law of Conservation of Mass Mass is conserved  amount of atoms cannot change Nothing is created or destroyed