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EE Q3

Exploration Education Q3 Exam Study Stack

QuestionAnswer
Matter Anything that has mass and takes up space.
Chemistry The study of matter and how it changes.
Mass The amount of matter in an object.
Elements Pure substances made of only one kind of atom.
Periodic Table A chart that organizes elements by atomic number and properties.
Atom The smallest unit of an element that retains its properties.
Conduction The transfer of heat through direct contact between particles.
Convection The transfer of heat by the movement of a liquid or gas.
Metals Elements that are typically shiny, malleable, and good conductors of heat and electricity.
Alloys Mixtures of two or more metals.
Mixture A combination of substances that are not chemically bonded.
Solution A homogeneous mixture in which one substance dissolves in another.
Evaporation The process by which a liquid changes into a gas at the surface.
Suspension A mixture in which particles are spread throughout but can settle out over time.
Rocket A vehicle that moves by expelling gas or exhaust in one direction to produce thrust.
Compounds Substances formed when two or more elements are chemically bonded together.
Combustion A chemical reaction in which a substance reacts rapidly with oxygen, releasing heat and light.
Acids & Bases Acids release hydrogen ions (H⁺) in solution; bases release hydroxide ions (OH⁻) or accept hydrogen ions.
Salts Ionic compounds formed from the reaction of an acid and a base.
Crystals Solids whose atoms or molecules are arranged in a regular, repeating pattern.
Chemical Bonds Forces that hold atoms together in molecules or compounds.
Conservation of Matter The principle that matter cannot be created or destroyed in a chemical reaction.
Chemical Reaction A process in which substances change into new substances with different properties.
Exothermic A reaction that releases heat energy.
Endothermic A reaction that absorbs heat energy.
Polymer A large molecule made of repeating smaller units called monomers.
Ionic Bond A bond formed by the transfer of electrons between atoms.
Atomic Number The number of protons in the nucleus of an atom.
Valence Electron An electron in the outermost energy level of an atom that can participate in bonding.
Asteroid A small rocky object that orbits the Sun, mostly found in the asteroid belt.
Comet An icy body that orbits the Sun and forms a glowing tail when near it.
Meteoroid A small rocky or metallic object traveling through space.
Hydrocarbon A compound made only of hydrogen and carbon atoms.
Organic Compound A carbon-based compound, usually containing hydrogen and often other elements.
1st Law of Thermodynamics The law stating that energy cannot be created or destroyed, only transferred or transformed.
Thermal Equilibrium The state in which two objects in contact have the same temperature and no heat flows between them.
Radiation The transfer of energy through electromagnetic waves.
Change of Phase A physical change from one state of matter to another (solid, liquid, gas).
Flash Point The lowest temperature at which a substance can vaporize and ignite.
Working Fluid A fluid that transfers energy in systems such as engines or refrigeration cycles.
Nutrients Substances that provide nourishment essential for growth and life.
Carbohydrates Organic compounds made of carbon, hydrogen, and oxygen that provide energy for living organisms.
Proteins Large molecules made of amino acids that perform many functions in living organisms.
Lipids Organic compounds such as fats and oils that store energy and form cell membranes.
Nucleic Acid Large biomolecules (DNA and RNA) that store and transmit genetic information.
Covalent Bond A bond formed when atoms share one or more pairs of electrons.
Created by: nolahomers
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