3rd ESO. BALANCING REACTIONS. ENGLISH-CHEMISTRY

Igualar reaccions químiques: _______ chemical reactions. Choose from:

/ level / tools / start over /out of / balancing / check /challenge

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==> Choose your ________

• check

• level

• challenge

• tools

Repte = Desafío = ________

• tool

• level

• challenge

• balance

Tornar a començar = Empezar de nuevo = ______________

• out of

• balancing

• begain

• start over

Comprovar = Comprobar = __________

• check

• balance

• challenge

• comprove

Equilibrat = Equilibrado = __________

• balancing

• equilibrium

• balanced

• adjustable

10 sobre 10 = 10 ________ 10

• envelope

• level

• on

• out of

Eines = Herramientas = _______________

• levels

• tools

• challenges

• outillage

If/When the _________________ equals one, you can omit it.

• atomic number

• Stoichiometric coefficient

• Molecular number

If/When you want to balance a chemical reaction, you must make sure _____________

• a) that, if an element is on the left, it must be on the right, too.

• b) that the number of atoms of every element in the reaction is the same on the left and on the right.

• c) that the total number of molecules is the same on the left and on the right

• a) and b) are true, but c) is false