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Chemistry

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Adrain Weissnat

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Cards in this guide (10)
What is the equation of methane with bromine in the presence of sunlight

CH4(g) + Br2(g) -----------------> CH3Br(g) + HBr(g)

(sunlight/UV Light)

What does percent composition tell you about a molecule

It tells you how much of a molecule is made up of each element. - APEX

How does one determine a percent composition from an empirical formula

divide the total mass of the element by the mass of the compound and multiply by 100%

What are the substances you end up with in a chemical reaction called

The products

What reaction shows a compound breaking apart into separate substances

Decomposition reaction

What is another way of writing 3.78 x 105

Another way of writing 3.78x105 is 396.9.

What is the best definition of a physical change

Answer this question… Which of the following is the best definition of a physical change?

Which concentration unit is independent of temp

The unit of concentration is Molar = Moles/Litre.

What happens in a double replacement reaction

In this reaction a change of bonds of the reactants occur: the general form is:
AB + CD = AD + BC

so3 is an empirical formula for which of the following A. so4B.s2o6C.s4o2D.s2o3

B. s2o6

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