Science Lab Unit 3: Properties of Matter. 07-PS1-2 1.I can identify and classify matter using their physical properties. 2.I can identify and describe.

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Presentation transcript:

Science Lab Unit 3: Properties of Matter

07-PS1-2 1.I can identify and classify matter using their physical properties. 2.I can identify and describe the evidence of chemical and physical changes in matter. 3.I can determine if a reaction has occurred by analyzing properties of a substance.

Properties of Matter Mass Volume Denstiy Solubility Melting & Boiling Point State of Matter Metallic Properties Length Other: Shape, Size, and Color

Mass Definition – the amount of matter in an object How do we Measure? – Triple Beam Balance – Digital Scale Mass of a Liquid – Use a graduated cylinder and take the mass of the empty cylinder – Pour liquid in and then measure the graduate cylinder again – Take the difference= mass of the liquid Mass of a solid – Simply place object on balance or digital scale. Unit – Grams 1000mg=1 gram 1000g=1 kg ( Mini-Lab Mass of a solid, Mass of Liquid)

Volume Definition – The amount of space an object takes up How do we Measure? – Ruler, graduated cylinder Volume of a liquid – Simply read the graduated cylinder – Unit- mL (milliliter) Volume of a Regular shaped object – Use a ruler and measure the length, width, and height of the object – L x W x H – Unit- cmᶟ Volume of an irregular sized object – Water Displacement Test Fill a graduated cylinder up to a desired amount. Usually 100 mL Place the object into the water and take a reading on graduated cylinder Subtract 100mL from the reading = volume of an irregular sized object – Unit- cmᶟ (Lab- How to Measure Volume)

Density Definition – the amount of mass a material has in a given volume – D=M/V How do we measure? – Ruler, graduated cylinder, scale or triple beam balance Density of a solid and liquid – Take the mass of the object on the scale. – Take the volume of the object. Refer to Volume notes on how to do so. – Mass divided by volume – Unit- g/cmᶟ or cubic mL Comparing densities of different liquids – Build a density column (Cover Density PPT activity and Liquid Layer Lab and Density for Solids Lab)

Solubility Definition – The number of grams of one substance will dissolve in 100g of another substance at a given temperature. How do we measure? – Hot plate, stirrer, beaker, thermometer ( Dissolving Rates and Solutions Lab)

Melting Point & Boiling Point Definition – Melting point- the temperature at which a solid changes to liquid MP of Water= 0°C – Boiling Point- the temperature at which a liquid changes to gas. BP of water=100°C It does NOT depend on the size of the sample the MP and BP are ALWAYS the same.