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Science Ch 1 Vocab

QuestionAnswer
WHMIS Workplace Hazardous Material Information System
Hazard Symbol warnings printed on containers to indicate that either the container or the product is dangerous.
Matter Anything that has mass and volume
Mass the amount of matter in a substance or object (often measured in grams)
Volume the amount of space a substance or an object occupies (often measured in liters)
Chemical change is a change in matter that occurs when substances combine to form a new substance.
Physical changes a change in matter in witch the appearance may change but no chemical bonds are broken or made and no new substance is formed.
State a property of a substance describing it as a solid, a liquid or a gas.
Kinetic Energy the energy of motion
Kinetic molecular theory explains what happens to matter when the kinetic energy of particles changes.
Melting the change of state form a solid to a liquid.
Melting point the temperature were a substance melts.
Boiling the change of state from a liquid to a gas.
Boiling point the temperature were a substance boils.
Condensation the change of state from a gas to a liquid.
Solidification/freezing the change of state from a liquid to a solid.
Sublimation the change of a state from solid to a gas.
Deposition the change of state from a gas to a solid.
Physical properties characteristics of matter that can be observed or measured.
Pure substance a substance that is made up of only one kind of matter.
element a pure substance that cannot be broken down or separated into simpler substances.
compound a pure substance composed of at least two elements combined in a specific way.
electrons negatively charges particles surrounding the atomic nucleus.
nucleus the tiny, dense, positively charged centre of the atom.
Protons positively charges particles the atomic nucleus.
neutron uncharged particle in the atom nucleus.
atom the smallest particle of an element that retains the properties of that element.
subatomic particles particles such as protons, neutrons, and electrons that are smaller than atoms
Created by: jacob.harris
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