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The pencil is actually assembled around the "lead" (which is actually not lead but is graphite). The pencil has two halves with a groove in each one, and they are sandwiched around the strip of graphite.
i think Buoyancy and Density are two physical properties that can vary even when the substance with these properties doesn't change.
Physical properties use your senses and chemical properties are when you mix two chemicals together.
Matter is anything that has mass and occupies a space. Matter has 2 properties physical properties and chemical properties. And 2 physical properties include mass and shape (solid, liquid and gas).Other physical properties of molecular matter include:VolumeColorOdorLusterHardnessMelting PointFreezing PointBoiling PointDensityMalleabilityDuctilityConductivity
the answer is air , a book , water ,a person reading.
lead and scratch
what are two physical properties about minerals
The pencil is actually assembled around the "lead" (which is actually not lead but is graphite). The pencil has two halves with a groove in each one, and they are sandwiched around the strip of graphite.
Pencils have never been made from lead. They are made with Graphite, a form of carbon. So you can not get lead poisoning from a pencil.
i think Buoyancy and Density are two physical properties that can vary even when the substance with these properties doesn't change.
Physical properties use your senses and chemical properties are when you mix two chemicals together.
Temperature and amount of the substance do not change chemical properties.
Pure
Covalent crystals are atoms held together in an extensive three-dimensional network entirely by covalent bonds. Two examples are diamond and graphite (pencil lead)
Density and specific internal energy are two physical properties that change with temperaturea change in temperature.
warmth and air
Yes ,as long as it has number two lead.