Matter Anything that has mass and takes up space!

Physical Properties Definition: A feature or characteristic of matter which can be observed without changing the identity of the matter Physical Properties can help you identify an object

Examples of Physical Properties Examples: Color Density Conductivity –thermal and electrical Smell Malleability Melting Point Taste Ductility Boiling Point Texture Solubility Magnetism

Malleabilty and Ductility Malleability -how well something can be flattened or stretched without breaking –Metals tend to be malleable – example is gold and copper –Wood and glass are NOT malleable Ductility -the ability to be stretched into a wire

Solubility Solubility -how well one material dissolves in another material. (Insoluble means cannot dissolve) measured by the amount of solute that can dissolve in 1000mL of water Things that affect solubility: –Temperature – as temperature increases so does the rate of dissolving –Stirring – speeds up dissolving –Surface Area - smaller pieces/particles – dissolve faster than large pieces of material –Amount of solute – greater amounts of solute require longer times to dissolve

Solubility continued Solute -the chemical being dissolved: the material you add to a solvent Solvent -a chemical that dissolves things: the material in which you add a solute Examples: Chocolate milk – the syrup is the solute and the milk is the solvent Tea – the tea leaves are the solute and the hot water is the solvent

Magnetism and Conductivity Magnetism -how well something sticks to a magnet Conductivity-There are 2 kinds –Thermal Conductivity – how well heat travels through a substance –Electrical Conductivity – how well electricity travels through a substance

Melting Point and Boiling Point Melting Point- the point at which a solid becomes a liquid Boiling Point- the point at which a liquid becomes a gas

Characteristic Property A feature of matter that is specific to the substance and does NOT change with the amount of substance…example…density, melting point and boiling point are characteristic properties

Chemical Properties A chemical property tells us how one thing reacts with another. Chemical changes happen during a chemical reaction.

Examples of Chemical Properties Flammability = how well something reacts with oxygen to produce heat/flame how easily a substance will catch on fire

Examples of Chemical Properties Reactions with acid – how well something reacts with an acid. Main reaction with and acid results in bubbling. When an acid reacts with another substance, usually hydrogen gas (which is highly explosive) is released Other Reactions – include heat being released, bubbling, strong odor, smoke, flame, change of color, etc. Non-Reactivity – when something fails to react…example…platinum dropped in acid has no reaction…nothing happens. Even when held into a flame, platinum has no reaction

Characteristic Property Characteristic Property – Can be Physical or Chemical Something unique to a substance – doesn’t matter how much or how little the sample of matter is Chemical characteristic property (of sodium) = sodium ignites when in contact with water

Review Matter = anything that has mass and takes up space.

Review Physical properties of matter can be described by using our senses (color, shape, scent, etc.) Physical properties of matter can be measured (mass, volume, density, melting and boiling point, etc.)

Review Matter can be described by how it will behave during a chemical reaction Some chemical properties include flammability and the ability of a substance to rust