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What are the 3 parts of the fire triangle
fuel, oxygen, heat
a material that releases energy when it burns
fuel
elephants have started to evolve without what, which helps protect them from poachers
the principal that during a chemical reaction, matter can neither be created or destroyed
conservation of mass
the kind of reaction which absorbs energy
endothermic reaction
when a chemical reaction is complete, you are left with different materials called
products
a solid that forms from solution during a chemical reaction
precipitate
a rapid reaction between oxygen and a substance called fuel
combustion
who invented spiked dog collars and why
and ancient greeks, to protect their dogs from wolf attacks
when one element replaces another in a compound, or when two elements in different compounds trade places
replacement
the amount of one material in a given amount of another material
concentration
these show the number of atoms in an element of a molecule
subscripts
up to how many years could you spend in jail for cutting down a cactus in Arizona?
up to 25 years
the cells in your body contain biological catalysts called
enzymes
a shorter easier way to show chemical reactions, using symbols instead of words
chemical equations
how did jack Daniel die
kicking a safe. when he kicked it, he broke his toe, which got infected, causing him to die of blood poisoning
a material used to decrease the rate of a reaction
inhibitor
when two or more substances combine to make a more complex substance
synthesis
the materials you have at the beginning of a chemical reaction
reactants
a process that breaks down compounds into simpler products
decomposition
a material that increases the rate of a reaction by lowering the activation energy
catalyst
a reaction that releases energy in the form of heat
exothermic reaction
the minimum amount of energy needed to start a chemical reaction
activation energy
the man who voices spongebob bas been married singe 1995 to what other character on the show?
Karen, planktons computer wife
the number placed in front of a chemical formula in an equation
coefficient