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Salk science final

6th grade Science

TermDefinition
Volume the amount of space something takes up. Formula is either FV-IV for irregular objects or LxWxH for regular objects.
Water displacement the method used to find the volume of irregular objects. (Final Volume- Initial Volume)
Mass how much matter is in an object
Density mass divided by volume. NEVER changes!
Surface area the amount of area that a surface takes up.
Concentration the amount of solute in a certain amount of solvent.
Inhibitor something that slows down a chemical reaction
Enzyme/Catalyst something that speeds up a chemical reaction
Temperature how hot or cold something is
Qualitative observations observations made by using your 5 senses
Quantitative observations observations made that include numbers and data (charts)
Responding Variable (Dependent Variable) what is being measured in the experiment
Manipulated Variable (Independent Variable) what is being changed on purpose to test the experiment
Controls the things in the experiment that stay the same.
Claim part of the conclusion that restates and answers the problem (1 sentence)
Evidence part of the conclusion where you write observations that support your claim. You can use bullets.
Reasoning part of the conclusion where you restate your claim, and include3 prior knowledge to explain why the experiment happened
Criteria factors that help make a project successful
Prototype a model or design
Constraint the factors that interfere with the project's success
Weight the measurement of the force of gravity on an object
Friction the force that one surface exerts on another when the two rub against each other. It causes objects to slow down.
Solid molecules are tightly packed, vibrates slowly and have a definite shape and volume
Liquid molecules are not as tightly packed as a solid but more tightly packed than a gas. Has a definite volume but not a definite shape.
Gas molecules are very loose, move very fast and have no definite shape or volume
Physical Change a change that alters the form of a substance without changing it into another substance
Chemical Change a change that forms a NEW substance with new properties
Chemical Property the ability for something to change into a new substance.
Physical Property describing a material by using your senses
Viscosity the resistance of a liquid to flowing
Solute the smaller part of a solution (6 letters)
Solvent the largest part of a solution (7 letters)
Mixture when 2 or more substances are put together, but not chemically combined (trail mix)
Compound when 2 or more elements are chemically combined (H20)
Evaporation liquid changes into a gas
Condensation gas changes into a liquid
Melting changing from a solid to a liquid.
Freezing changing from a liquid to a solid
Thermal Energy the energy that comes from heat
Atomic Number the number of protons in an element (A=P=E M-A=N)
Coefficient the big number in front of the compound. Multiply this number with the subscript to get the number of atoms in each element.
Subscript the small number written after an element that tells the number of atoms
Protons same as the atomic number and the electrons, positively charged
Neutrons no charge
Electrons negatively charged
Groups (Family) the vertical (up and down) columns in the periodic table. The elements in the same group have similar characteristics.
Periods the horizontal rows in the periodic table. They do NOT share similar properties.
Chemical Reaction the formation of a gas, a color change, and when a new substance is formed are all evidence that a chemical reaction has taken place.
Exothermic Reaction heat is released in this type of reaction showing an increase in temperature
Endothermic Reaction heat is absorbed in this type of reaction resulting in a decrease in temperature
Conservation of Mass matter is not created or destroyed
Reactants the substances listed on the left side of the equation
Products the substances listed on the right side of an equation
Synthesis reactant plus reactant yields product (one plus sign on the left side of the arrow)
Replacement one or two elements replace themselves in the equation (one plus sign or the left side of the equation and one on the right side of the equation)
Decomposition the reactants decompose and break down into its parts (one plus sign on the right side of the equation)
Precipitate a solid that forms from a solution during a chemical reaction
Net Force the total force on an object (when the net force is zero forces are balanced)
Motion when an object is moving
Force a push or a pull
Balanced Force two forces acting on an object equal in strength and opposite in direction (object will not move)
Unbalanced Force two forces that are not equal in strength causes an object to move
Speed distance divided by time
Velocity speed and direction
Acceleration final velocity minus initial velocity divided by time
Air Resistance a force that slows down an object
Newton's First Law of Motion an object at rest will stay at rest and an object in motion will continue in motion until an outside force acts upon it
Inertia the tendency of an object to resist change in its motion
Newton's Second Law of Motion Force= Mass x Acceleration ( if you increase mass you could decrease acceleration)
Newton's Third Law of Motion for every reaction there is an equal and opposite reaction.
Created by: nsilvar
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