What do you think Chemistry is? What is chemistry? After a week of this class, we have never really asked the question: What is chemistry? Now we are… What do you think Chemistry is?

Introduction to Chemistry

Veritasium What do people think chemistry is https://www.youtube.com/watch?v=CRSDxGtcsxE

What is Chemistry The study of how everything interacts

Observing the world Chemistry and science in general requires Observation of something using the five senses Touch Taste Smell Vision Sound Chemists are concerned with properties of stuff that are observable

ALLWAYS ASK QUESTIONS!!!! Go around the room Go around the room and describe the objects. Give at least 10 observations of each objects. Some questions to ask yourself: Does the object have areas with different properties? Where? What? What color is the object? Does it change when you do ____? How does ____ feel? Does it smell? Ask more!!!!!!!!! Science tip: ALLWAYS ASK QUESTIONS!!!!

Go around the room What have we discovered? On a note, write one thing you noticed about each object. We will share them in class

All Things Have Properties The features of matter that can be observed and experimented. Examples: hardness, color, boiling/melting point, flammability, strength, density. There are four main properties we will discuses Physical properties Chemical properties Extensive properties Intensive properties

Physical Properties Physical Property (noun) Examples A characteristic that can be observed or measured without changing the identity of the substance. Examples Melting/boiling point, density, mass, volume (how big something is), temperature, conductivity, malleability

Physical Properties

Tell me physical properties of the objects Going around to the different objects on the tables, list 10 different physical properties they have. Some questions to ask yourself: Does the object have areas with different properties? Where? What? What color is the object? Does it change when you do ____? How does ____ feel? Does it smell? What happens if you rub it against the table? Something else?

Go around the room (Physical Properties) What have we discovered? On a note, write one thing you noticed about each object. We will share them in class

Extensive vs Intensive Extensive properties (noun) Properties of matter (stuff) that depends on the amount of matter (stuff) present Intrinsic properties (noun) Properties of matter (stuff) that do not depend on the amount of matter (stuff) present.

Extensive Properties Extensive Properties Properties that depend on the amount of matter (stuff) that is present. Examples of extensive properties: Volume, mass (or weight), amount of energy in a substance.

Extensive Properties

Labeling Extrinsic properties On your list, label all extrinsic properties Does the property you list require the presence of matter (stuff)? Sharing is caring… Share your answers.

Intrinsic Properties Intrinsic Properties Properties of matter that do not depend on the amount of matter present Examples of Intrinsic properties: Temperature, conductivity, boiling/melting point, flammability, hardness, malubility.

Labeling Intrinsic properties On your list, label all intrinsic properties Does the property you list not require the presence of matter (stuff)? Sharing is caring… Share your answers.

Matter Matter- (noun) “mat·ter” Mass- (noun) “ˈmas” Anything that has mass and takes up space Mass- (noun) “ˈmas” a measure of the amount of matter (grams) NOT Pounds

Atoms Atom –(noun) “at·om” Element - (noun) “el·e·ment” the smallest particle of an element that can exist either alone or in combination Element - (noun)  “el·e·ment”  A pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom. Compound – (verb) “com·pound” A substance that can be broken down into simple stable substances.

Atoms

Elements

Compounds

Video time!!!! https://www.youtube.com/watch?v=FSyAehMdpyI&list=PL8dPuuaLjXtPHzzYuWy6fYEaX9mQQ8oGr&index=1

Chemical Properties

Chemistry The study of the composition, structure and properties of matter, the processes that matter undergoes and the energy changes that accompany these processes.