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If 300g of chemicals react and you measure only 200g of products, what type of system was probably used?
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
Which fo the following is true of an OPEN SYSTEM
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
20g of A + ____g of B ------ 60g of C What is the missing mass?
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
What is a precipitate?
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
Which of the following is true of a CLOSED SYSTEM
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
If the chemicals in a reaction start to feel cold, what type of reaction occurred?
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
Which of the following would be a PHYSICAL change that occurs when a candle is buring?
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
What 3 things are required for fire to burn?
open system
matter can escape during the reaction, mass may change
all the matter is captured, mass before is the same as the mass after
endothermic
a solid that forms from 2 liquids reacting
40g
oxygen, fuel, and heat
wax melting
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