Chemistry Study of Matter Matter- anything that has mass and volume

Examples of matter any substance that has mass and volume Book Book Cells Cells Desk Desk Pen Pen You You air air

- Elements and Atoms The Building Blocks of Matter Matter may consist of elements, compounds, or mixtures. Matter may consist of elements, compounds, or mixtures.

All matter can be described as having physical and chemical properties p.537 Properties are qualities or characteristics Properties are qualities or characteristics Physical properties are things that can be observed just by using the five senses Physical properties are things that can be observed just by using the five senses Chemical properties describe how the substance will react (combine) with other substances to form a new product Chemical properties describe how the substance will react (combine) with other substances to form a new product

Physical Properties Can be observed with five senses Can be observed with five senses Color Color Taste Taste Odor Odor Texture Texture

Other unique physical properties Density (mass/volume) Density (mass/volume) Physical state: solid, liquid, gas Physical state: solid, liquid, gas Boiling point (temperature at which the substance goes from a liquid to a gas) water’s boiling point is 100 Boiling point (temperature at which the substance goes from a liquid to a gas) water’s boiling point is 100 Melting point (temperature at which the substance goes from a solid to a liquid) water’s melting point is 0 (below zero, water is solid/ice, above zero, water is liquid) Melting point (temperature at which the substance goes from a solid to a liquid) water’s melting point is 0 (below zero, water is solid/ice, above zero, water is liquid) Solubility (how well the substance dissolves in water Solubility (how well the substance dissolves in water

Examples of physical changes Change in size of substance Change in size of substance Glass is broken Glass is broken Paper is torn Paper is torn Water boiling Water boiling

Chemical Properties p.537 Chemical properties describe how one substance reacts (changes) into another substance. Chemical properties describe how one substance reacts (changes) into another substance. Examples of chemical changes Examples of chemical changes Burning wood Burning wood Rusting iron Rusting iron Milk souring Milk souring Note: Chemical changes are usually permament Note: Chemical changes are usually permament

Physical or chemical change? Ripped paper? Ripped paper? Physical Physical Sharpening a pencil? Sharpening a pencil? Physical Physical Dynamite exploding? Dynamite exploding? Chemical Chemical Digesting food? Digesting food? Chemical Chemical

Physical or Chemical Change? Wood burning? Wood burning? Chemical Chemical Cutting iron? Physical

In conclusion All matter have both physical and chemical properties. These properties make the substance unique (different) from all other substances. All matter have both physical and chemical properties. These properties make the substance unique (different) from all other substances. The physical properties of a substance are those that can be observed using the five senses. The physical properties of a substance are those that can be observed using the five senses. The chemical property of a substance describes its ability to change into another substance. The chemical property of a substance describes its ability to change into another substance.