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10 Terms
1
What is matter?
Matter is what makes up the world around us, using atoms and particles.
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2
What are the three types of matter?
Solid, Liquid, and Gas.
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3
Distinguish between physical and chemical properties.
Physical properties are appearance related (shape, size, color, weight); chemical properties include reactivity with substances like oxygen or acids.
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4
Define atom.
An atom is a collection of protons, neutrons, and electrons, with protons in the nucleus and electrons/neutrons moving around it.
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5
What is the difference between protons, neutrons, and electrons?
Protons are positively charged and in the nucleus; neutrons are neutrally charged and also in the nucleus; electrons are negatively charged and orbit the nucleus.
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6
What is relative mass?
Relative mass is a dimensionless quantity that measures the average mass of atoms of a given element.
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7
What do hazard symbols display?
Hazard symbols display the risks associated with a certain substance.
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8
What does reactivity refer to?
Reactivity refers to how a substance reacts to certain conditions or materials.
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9
What is the difference between a theory and a law in science?
A theory explains why phenomena occur with scientific evidence, while a law explains how phenomena occur usually with mathematical expressions.
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10
What does conductivity refer to?
Conductivity refers to how a material reacts to electricity.
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