Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
31 Cards in this Set
- Front
- Back
Does phlogiston exist?
|
No way Jose
|
|
Who first isolated the gas we now call oxygen?
|
Joesph Priestly
|
|
Give two names for the chemical Preistly decomposed to produce oxygen?
|
mercury (II) oxide, HgO, mercuric oxide
|
|
Give the equation for this decomposition reaction...
mercuric oxide decomposes to produce oxygen |
2 HgO ---> 2 Hg + O2
|
|
Who first explained burning?
|
Antoine Lavosier
|
|
How do chemistsdescribe burning?
|
it involves a chemical combination with oxygen
|
|
Will the ashes in your fireplace that result from butning a log weigh more, less or the same as the weight of the log? Explain why.
|
Less because all the oxygen in the long will burn away and it would leave just carbon.
|
|
Does oxygen burn?
|
yes
|
|
Does oxygen support combustion?
|
Yea baby!!
|
|
We produce oxygen in the lab by decomposing a solution of hydrogen peroxide. Write the equation.
|
2 H2O2 ----> 2 H2O + O2
|
|
When we burn sulfur it seens to disappear. Why is there no residue and where did the sulfur go?
|
Sulfur burns to produce a gas which goes into the air
|
|
Is burning a physical or chemical change?
|
chemical
|
|
Is burning an endothermic or exothermic change?
|
exothermic
|
|
Does carbon dioxide burn?
|
no
|
|
Does carbon dioxide support the combustion of wood, paper, coal, etc?
|
No
|
|
Does carbon Dioxide support the combustion of metals such as Mg, AL, Zn?
|
Yes
|
|
When carbon dioxide reacts with water what acid is formed?
|
Carbonic acid
|
|
Starting materials in a chemical reaction
|
reactants
|
|
ending materials in a chemical reaction
|
products
|
|
the word that is used to read the arrow in an equation
|
yeilds
|
|
a term meaning hot, melted material
|
molten
|
|
a term meaning decomposition by the use of electricity
|
electrolisis
|
|
an insoluble solid formed during a chemical reaction
|
precipitate
|
|
the term usd for the numbers we insert to balance an equation
|
coefficients
|
|
a word meaning a gas is being released
|
effervasence
|
|
combustion is a word that means ______
|
burn
|
|
we balance equations to obey the Law of ___________
|
conservation of matter
|
|
a material htat is added to a reaction to speed it up but is not consumed itself.
|
catalyst
|
|
a reaction that gives off heat is said to be ___________
|
exothermic
|
|
a reaction that requires the addition of heat is said to be ___________
|
endothermic
|
|
our common fuels contain only the elements carbon and bydrogen and are called ___________
|
hydrocarbons
|