science finall vocab
Terms
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- Buoyant force
- the upward force exerted by a gas or liquid that keeps an object afloat
- atom
- the smallest part of an element that has all the properties of that element.
- atomic mass
- the mass of neutrons and protons in an atom
- acid
- a compound that tastes sour, reacts with metals, turns blue litmus paper red, and increases the hydronuim ions in water.
- base
- a compound that tastes bitter, feels slippery turns red litmus paper blue, increases hydroxide ions in water.
- control
- the part of the experiment that reamains unchanged
- compound
- a substance composed of 2 or more elements in a definite ratio.
- catalyst
- a reactant that speeds up a reaction
- endothermic reaction
- a reaction in which energy is added.
- covalent bond
- a bond formed between two nonmetals sharing electrons.
- diatomic molecule
- a molecule consisting of two of the same kind of atoms
- ductile
- the property of a metal that allows it to be pulled into wires.
- electron
- the subatomic particle of an atom having a negative charge
- element
- a pure substance that cannot be seperated into simpler substances by a chemical means
- Dmitri mendeleev
- first person to come up with a working periodic table.
- exothermic reaction
- a reaction in which energy is given off.
- density
- the ratio of a substances mass to its volume.
- condensation
- the change from a gas to a liquid.
- force
- a push or pull
- gram
- SI unit of weight.
- gravity
- a property of matter; the force of attraction between all objects.
- indicator
- a substance that changes color in the presents of an acid or a base.
- intertia
- the tendency of an object to resist a change in motion
- inhibitor
- a reactant that slows down a reaction
- ionic bond
- a bond formed between a metal and a nonmetal, electrons are transfered from the metal to the nonmetal
- issac newton
- scientist who discovered relationship between objects in motion, at rest, and accelerating; and the effect of gravity on an object
- law of conservation of mass
- matter can not be created or destroyed in ordinary chemical reactions
- liter
- SI unit of volume
- mass
- the amount of matter in an object
- malleable
- the property of a metal that allows it to be shaped
- matter
- anything that has mass and takes up space
- metal
- a shiny substance that conducts heat and electricity
- metalloid
- elements that have properties of metals and nonmetals
- meter
- SI unit of length
- molecule
- the smallest part of a compound having all of the properties of that compoud
- neutron
- the subatomic particle of an atom having no charge, found inside the nucleus
- nonmetal
- a substance that conducts heat and electricity poorly
- PH
- a scale that expresses the acidity or basicity of a substance
- pecipitate
- an insoluble substance formed in a chemical reaction
- proton
- the particle of an atom having a positice charge, found in the nucleus
- soulubility
- the ability of one substance to dissolve into another.
- solute
- the substance being dissolved
- solution
- a mix in which one substance is dissolved into another
- solvent
- the substance in which the solute is dissolved
- sublimation
- changing directly from a soild to a gas without becoming a liquid
- viscosity
- the resistance of a gas or liquid to flow
- volume
- the amount of substance in an object
- weight
- the measure of gravity on an object
- isotope
- atom that has the normal atomic number (protons) but a different mass number
- cunduction
- transfer of heat from 1 body to another without movement
- convection
- transfer of heat from 1 body to another with movement