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Exploring Diversity of Matter by Its Physical Pr ...
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What is the hardest substance found on the Mohs Scale of hardness?
Diamond
What are three important questions to ask before selecting a material to build an object?
What purpose does the object serve? What physical properties does the object need to have? Is the cost of this material too much for the purpose?
Why do some objects sink in water?
Because some objects have a higher density than water.
Why do some objects float in water?
Because they have a lower density that water.
Write the formula for finding the density of an object.
Density = Mass / Volume
Why do we use displacement cans?
To measure the volume of an irregular solid.
What is the name of the curved shape that the liquid level makes in narrow glass cylinders such as measuring cylinders?
Meniscus
Name the instrument for measuring length shown in the picture.
Vernier calipers
What is the SI unit of mass?
kilogram/kg
What is the instrument in the picture used for?
Used to measure mass.
Why do we use SI units?
To ensure that our measurements are fair and objective, to have common standards.
Name the piece of lab equipment shown.
graduated cylinder, measuring cylinder
What property of materials is being described? Ability to withstand scratches.
Hardness
What property of materials is being described? Temperature at which it changes in state from a liquid to a gas.
Boiling point
What property of materials is being described? A measure of how readily heat passes through it.
Thermal conductivity
What property of materials is being described? Bend without breaking.
Flexibility
What property of materials is being described? A measure of how readily electricity passes through it.
Electrical conductivity
What property of materials is being described? Temperature at which it changes in state from a solid to a liquid.
Melting point
What property of materials is being described? The quantity of matter packed into a unit of the material.
Density
What property of materials is being described? Ability to support a heavy load without breaking or tearing
Strength
How can a parallax error be avoided?
Bring your eye perpendicular to the measuring scale.
How does a parallax error occur?
When the eye is not perpendicular to the measuring scale.
What is volume?
The amount of space an object occupies.
Complete the sentence. Length is defined as…
The distance between two specific points.
What is mass?
The quantity of matter in a body.
Complete the sentence. Density is…
The quantity of matter packed into a unit volume.
What are physical properties?
The qualities that can be detected using our five senses or a measuring device.
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