BC Science Probe 7 Section 4.1 Pages 91-93 Properties of Matter BC Science Probe 7 Section 4.1 Pages 91-93

Properties of Matter A property is a characteristic that may help to identify a substance. Properties can be observed using our five senses. Sight Sound Taste Smell Touch

Properties of Matter Properties can also be identified using tests and measurements.

Properties of Matter Some properties that we can observe with our senses are colour, taste, texture, odour, lustre and clarity. You can see how these are used to describe matter in the following table…

Property Describing the property Colour Is it black, white, colourless, red, blue, greenish-yellow…? Taste Is it sweet, salty, sour, bitter…? Texture Is it fine, coarse, smooth, gritty…? Odour Is it odourless, spicy, sharp, burnt…? Lustre Is it shiny, dull…? Clarity Is it clear, cloudy, opaque, translucent…?

States of Matter Solid, liquid and gas are the states of matter. You can use your senses to observe these.

States of Matter Some substances can be found in all three states, it just depends on the temperature: Water Solid – ice Liquid – water Gas – water vapour

Properties You Can Measure We can use tests to determine some properties. We could see which substances dissolve in water. We could see which substances float and which ones sink.

Properties You Can Measure Melting and Boiling Points Melting point: The temperature at which the solid form of the substance changes to a liquid. Water changes from solid ice to liquid water at 0⁰C so the melting point of water is 0⁰C. The freezing point is the same as the melting point. It is when the substance is cooled and goes from liquid to solid.

Properties You Can Measure Melting and Boiling Points Boiling point: The temperature at which a liquid changes into a gas. Liquid water changes to water vapour at 100⁰C so the boiling point of water is 100⁰C.

Properties You Can Measure

Properties You Can Measure

Properties You Can Measure

Properties You Can Measure