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Properties of Matter

QuestionAnswer
What is matter? Anything that has mass and takes up space
How do you measure matter? mass and volume
What is the Law of Conservation of Mass? Mass cannot be created or destroyed (but it can be changed from one state to another)
When a liquid changes to a gas, what happens to matter? Matter stays the same
What is a Chemical Property defined as? The ability of a substance to undergo or resist chemical changes
What is a Physical Property defined as? Characteristics of matter that can be measured and observed without changing the makeup of the substance
Color, odor, taste, density, malleability,brittleness and tensile strength are examples of what type of property? (Chemical or Physical) Physical
Flammability and the ability to react with other substance or energy is an example of which type of property? (Chemical or Physical) Chemical
What is an Endothermic reaction? a chemical reaction that absorbs (takes in) energy (heat)
What is an Exothermic reaction? a chemical reaction that releases (gives off) energy (heat)
What is the definition of a Substance? a particular kind of matter with the same makeup and properties (pure)
What is the definition of an Element? A substance that cannot be made into a simpler substance by ordinary means (found on the periodic table) *all matter is made of elements (alone or in combination)
What is the definition of a Compound? A substance that is made of two or more elements that are chemically combined *each compound has it’s own properties (combined chemically)
What is the definition of a Mixture? a combination of two or more kinds of matter that can be separated by physical means.
What is a Phase Change? A change from one state of matter (solid, liquid, gas) to another.
What happens during a Phase Change? Heat energy is either absorbed (as heat molecules expand) or released (as molecules slow down & move closer together)
What happens during the Melting Phase? Phase change from a solid to a liquid (ex: ice changing to water) Molecules speed up, move farther apart, and absorb heat energy
What happens during the Freezing Phase? Phase Change from a liquid to a solid (ex: water changing to ice) Molecule slow down, move closer together and release heat energy.
What happens during the Vaporizing (Boiling) Phase? Phase change from a liquid to gas. It occurs at the boiling point of matter. Molecules speed up, move farther apart, and absorb heat energy.
What happens during the Evaporation Phase? Phase change from a liquid to a gas on the surface of a liquid (occurs at all temperatures). Molecules speed up, move farther apart, and absorb heat energy.
What happens during the Condensation Phase? Phase change from a gas to a liquid (ex: water on outside of glass). Molecule slow down, move closer together and release heat energy.
What happens during the Sublimation Phase? Phase change from a solid to a gas (ex: dry ice). Molecules speed up, move farther apart, and absorb heat energy.
What happens during the Deposition Phase? Phase change from a gas to a solid (ex: frost on windows). Molecules slow down, move closer together and release heat energy.
What part of the graph shows where a phase change is occurring and there is no temperature change during that phase change? Plateau
What is the melting point of ice and freezing point of water? 0 degrees Celsius
What is the boiling point of water? 100 degrees Celsius
Which type of matter (solid, liquid, gas) has the most space between particles and therefore generates the most energy? Gas
Kinetic Molecular Theory states that all particles have energy, and the energy varies depending on the _______________ the sample of matter is in temperature
Which particles have the least amount of energy since the molecules are so tightly packed together? Solids, liquids or gasses? solids
How are molecules heated through Conduction? Heat transfers through direct contact with objects that are touching.(ex: hot sand burns feet) - happens only in solids.
How are molecules heated through Convection? Heat passes through fluids (liquids & gases). Molecules rise when heated, then cooler molecules sink down to absorb heat. The cycle continues until all molecules are heated (current).
How does Radiation heat through empty space? heat moves through places where there are no molecules by moving in waves. Ex: light bulb, fireplace, human body giving off heat, how the sun heats the Earth
What is heat transfer? how heat moves out of one thing and into another thing
Created by: chetjenn