Final!!!!
Questions taken from the review sheet for the science final
Terms
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- deposition
- gas to solid
- neutron
- a subatomic partical that has no electrical charge and is found in the nucleus of an atom
- freezing
- liquid to solid
- endothermic reaction
- the solution becomes cold
- melting
- sold to liquid
- Democritus
- atoms are different in their shapes and weights. Atoms are also solid
- electromagnetic energy
- the energy of an electrical charge
- liquid
- has volume, no shape
- solvent
- the substance that dissolves the solute
- vaporization
- liquid to gas
- density
- the separation of the dense minerals from the less dense ones
- metal displacement
- a chemcial process when one atom or ion replaces one atom or ion of another
- cation
- an atom that has a positive electrical charge
- aquitard materials
- solid rock, clay, soil
- Bohr
- The planetary model where the elctrons are spinning in shells.
- examples of electromagnetic energy
- light, electricity, microwaves, infrared radiation, x-rays, gamma rays, UV light
- pure substance
- a substance that is made up of the same matter
- compound
- two or more atoms that are chemically bonded together
- isotope
- an atom that has different amounts of neutrons
- reactant
- a chemical that starts a chemical reaction
- acetylene
- burns in the presence of fire
- chromatography
- a method that separates a substance based on its avility to be dissolved in the presence of a solvent
- double displacement
- similar to single displacement, except more than one chemical
- Schrodinger
- Wave electron model
- solid
- has volume and shape
- hydrogen
- will explode in the presence of a flame
- two types of mines
- underground, surface
- anion
- an atom that has a negative electrical charge
- product
- a chemical that is produced from a chemical reaction
- 4 states of matter
- plasma, solid, liquid and gas
- oxygen
- will cause a flame to burn brighter and faster or cause a burning ember to burst back into flame
- carbon dioxide
- will cause a flame to go out
- saturated
- a solution that has so much solute in it that it can no longer be dissolved
- nuclear energy
- the energy due to the force that keeps the nucleus of an atom together
- four indicators a chemical reaction has occured
- a new chemical is produced, color change, temperature, light
- decomposition
- a chemical reaction that occurs due to heat or light
- Rutherford
- The nucleus of the atom is very small, dense, and has a positive electrical charge. The electrons are outside the nucleus, spinning around the nucleus.
- what must happen if a chemical reaction occurs
- a new chemical is produced
- types of wastes
- energy, agricultrual, industrial/hazardous, sewage
- two environmental hazards of mining
- scars the land surface and buries fertile land
- heat energy
- the energy due to the increase or decrease of temperature which could cause a change in the state of matter
- exothermic reaction
- the solution becomes hot
- density
- the mass of a substance divided by its volume
- density of a solid
- g/cm³
- electrolysis
- a process in which chemical reactions occur when an electrical current passes through an electrolyte solution
- volume
- the amount of space a substance has
- sublimination
- solid to gas
- precipitate
- a solid substance produced in a chemical reaction
- plasma
- matter at high energy
- cadmium rod
- absorbs heat
- proton
- a subatomic partical that has a positive electrical charge and is found in the nucleus of an atom
- chemical energy
- the energy due to bonds being made
- Dalton
- Eache element was composed of the same kind of atom. Elements of a given substance have atoms composed of the same mass, size and shape. Atoms form compounds in ratios. Chemical reactions are rearrangements of atoms.
- magnetism
- the use of a magnet to find out if you have iron, nickel or cobalt
- flame test
- a test that determines the metal cation that has been dissolved in a solution
- metallic covalent bond
- a bond between two atoms because the electrons are being shared, both atoms are metals
- synthesis
- a chemical reaction where two or more simpe substances combine to form a neat and more complex chemical substance
- gas
- no volume or shape
- single displacement
- a chemical reaction where an atom or chemical group replace an atom or chemical group
- density of a liquid
- g/ml
- chemical
- the use of chemicals to dissolve a dseired mineral into a liquid solution
- solution
- a substance that has something fully dissolved in it
- covalent bond
- a bond between two atoms because the electrons are being shared
- ionic bond
- a bond between two atoms because one atom takes electrons away from another atom
- solute
- the substance dissolved by the solvent
- mass
- the amount of matter a substance has
- Thompson
- The plum pudding model where are the negative and positive matters are mixed together.
- mechanical energy
- the energy due to motion
- concentrted
- strong solution
- dilute
- weak solution
- filtration
- a process that sperates a solid from a liquid
- three types of solar radiation
- UV rays, visible rays, infrared rays
- density
- mass divided by volume
- three things produced in a nuclear reaction
- nucleus, neutron, heat
- effervescence
- a gas that is produced in a chemical reaction
- matter
- anything that has mass and volume
- ion
- an atom that has an electrical charge
- aquifer materials
- gravel, sandstone, sand
- weight
- mass times gravitational attraction
- condensation
- gas to liquid
- molecule
- two of the same atoms combined