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Chemistry

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Melvina Boyle

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Cards in this guide (16)
What is the basic unit of chemistry

The atom

How is stoichiometry used to calculate the amount of product produced

Stoichiometry relates moles of reactant to moles of product, so if you have the amount of reactant in the equation, you can calculate the amount of product produced.

How are models affected by new evidence

Models are changed if they don't fit new data.

What happens at the cathode in an electrolytic cell

Reduction occurs at the cathode in an electrolytic cell.

Which of these statements does not describe electricity

electricity cools down devices as it travels through them

Electricity acts in ways similar to ice, which is a solid.

Why is the average atomic mass used when calculating grams of a substance

the elements in the substance are mixtures of their isotopes

Which metal gets coated during electroplating

The cathode gets coated during electroplating.

What characteristics indicates that an atom is unstable

by creating very strong bonds

What is the oxidation half-reaction for Mg s plus ZnCl2 aq --- MgCl2 aq plus Zn s

MgCl2 aq plus Zn s is the oxidation half-reaction for Mg s plus ZnCl2 aq.

All life on earth is ultimately dependent on what

The sun for energy

Reduction occurs at which electrode

The electrode that removes ions from solution

Similar scientific themes are seen in what areas of science

In all areas of science

What is a trend seen in the periodic table

electronegativity

Which of the following metals is the least stable Silver Potassium Iron or Aluminum

Potassium.

Which of the following statements describes electromagnetism

Magnetism can create electricity, and electricity can create magnetism.

In the reaction mgcl2 plus 2koh mgoh2 plus 2kcl how many moles of koh react with 1 mole of mgcl2

2

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