What are the chemical properties of matter? A substance has characteristic properties such as density, a boiling point, melting point & solubility.

Chemical Properties

Chemical Properties Flammability (Does it burn?) Chemical properties tell you the types of changes the matter can undergo. Flammability (Does it burn?) Oxidation (Does Oxygen change it?) Toxicity (Is it poisonous?) Sensitivity to Light Reactivity with water extension

Chemical Properties Chemical properties describe a change in structure. The substance is forever changed, it can not be changed back. extension

Chemical Properties: Flammability Flammability: The ability to catch fire! extension

Chemical Properties: Oxidation The ability to react with oxygen extension

Chemical Properties: Toxicity the ability to be poisonous extension Toxicity is the degree to which a substance can damage an organism.

Chemical Properties: Sensitivity to Light the ability to change when exposed to light extension

Chemical Properties: Reactivity to Water the ability to change when exposed to water extension Found in the first column of the periodic table of elements, the alkali metals react readily with many substances in the environment, even with relatively inert substances, such as water. Because of their extreme reactivity, alkali metals rely on special containment to prevent inadvertent reactions that tarnish the purity of the sample. Alkali metals share certain identifying characteristics: extreme reactivity, pliability, silvery color and low density Some elements react explosively with water! Sodium, Potassium, Lithium, and Calcium https://www.youtube.com/watch?v=HvVUtpdK7xw

Physical & Chemical Properties of a Substance. Different ____________ have different _________(or characteristics) which we use to identify them. Some of these are called __________ Properties, and some of these are called ____________ Properties. I use this as a class warm up after completing physical and chemical properties. Students simply copy the following slide into their notes and fill in the blanks. Can be measured without changing the chemical properties Cannot be measured without changing the chemical properties

Physical & Chemical Properties of a Substance. Different ____________ have different _________(or characteristics) which we use to identify them. Some of these are called __________ Properties, and some of these are called ____________ Properties. substances properties Physical Chemical answer key Can be measured without changing the chemical properties Cannot be measured without changing the chemical properties

Can be measured without changing the chemical make-up of the substance Physical Chemical Color Taste Heat of combustion Size Smell Flammability Shape State Oxidation * Boiling Point * Freezing Point Reactivity * Density *Melting Point Sensitivity to light * Solubility *Volume Radioactivity Magnetism Malleability Toxicity Can be measured without changing the chemical make-up of the substance Can only be measured by changing the chemical make-up of the substance Review of differences

A B C D E F Physical Properties Chemical Properties Describe… Change the structure of matter? Examples include… I have kids copy this table into their notes with the answers as a quick formative assessment yes characteristics of a substance shape, phase of matter, volume, density, boiling point, mass, solubility how one substance reacts with another substance no flammability, oxidation, toxicity, reactivity to water A B C D E F

B D E A C F Physical Properties Chemical Properties Describe… Change the structure of matter? Examples include… B how one substance reacts with another substance D E A shape, phase of matter, volume, density, boiling point, mass, solubility flammability, oxidation, toxicity, reactivity to water C F

Which is true for every atom of an element Which is true for every atom of an element? A It can be seen with a magnifying glass. B It is joined together with another atom. C It has mass and volume. D It is weightless.

C It has mass and volume. Which is true for every atom of an element? A It can be seen with a magnifying glass. B It is joined together with another atom. C It has mass and volume. D It is weightless.

A student has two pieces of aluminum foil A student has two pieces of aluminum foil. Each piece can be folded and rolled into a wire. Why do both pieces of aluminum foil behave the same way? A They are composed of the same types of atoms. B They are composed of different types of atoms. C They have the same physical properties, but different chemical properties. D They have the same chemical properties, but different physical properties.

A student has two pieces of aluminum foil A student has two pieces of aluminum foil. Each piece can be folded and rolled into a wire. Why do both pieces of aluminum foil behave the same way? A They are composed of the same types of atoms. B They are composed of different types of atoms. C They have the same physical properties, but different chemical properties. D They have the same chemical properties, but different physical properties.