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Matter
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Why is mixing Coca-cola and mentos and example of a physical change?
Because no new substance is produced. CO2 is already present in the soda.
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Physical or chemical change?
physical
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When something burns it is which of these: physical or chemical?
Chemical
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The spoiling of milk is an example of which type of change?
chemical
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This type of change results in a new substance and can't be reversed.
Chemical change
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Why is an inflated balloon heavier than an empty balloon?
It has air/gas inside of it.
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For a liquid to become a solid, heat energy needs to be: added or removed?
Removed! The temperature needs to be colder.
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What property of plastic makes it a good choice for the pot handle?
It doesn't conduct heat.
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A change in matter that involves a change in a physical property but doesn't create a new substance
Physical change
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Color, density, magnetism, heat conduction, texture, hardness are examples of physical or chemical properties?
Physical Properties of matter
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Matter is made of _________ that are too small to be seen.
particles
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Matter in this state has a fixed shape and volume, and can't be compressed.
Solid
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Flammability and reactivity are examples of chemical properties of matter. T or F?
True
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Everything that has weight and takes up space
matter
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What happens to the particles of a liquid when we add heat energy?
the particles move faster and spread more, it turns into a gas.
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Particles are always moving. True or False?
True, depending on the amount of energy they have some move faster than others.
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the characteristics that we use to describe matter. For example: color, texture, magnetism, etc
Properties
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The smallest possible unit of matter.
Particles (atoms)
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When heat is added to a solid, it becomes this state of matter
liquid
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Which property determines if something will float or sink?
Density
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Name the 3 states of matter
Liquid, solid, and gas.
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the amount of space that an object takes up
Volume
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the ability of matter to dissolve in something else
solubility
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Which property could help you identify between aluminium and iron?
Magnetism. Iron is magnetic, aluminium isn't.
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