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Chemistry

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Bailee Hand

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Cards in this guide (11)
Which of the following is an example of a synthesis reaction

H2+Br2-->2HBr

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%

Which element is the reducing agent in a redox reaction

The reactant that has the atom that gets oxidized

Where are the products in a chemical equation located

usually on the right of the yeild sign
On the right side of the arrow in the equation

What happens in a reduction

An element gains one or more electrons

What reaction shows a compound breaking apart into separate substances

Decomposition reaction

What is the best definition of a physical change

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

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

Which of following is an example of a decomposition reaction

2NaCl - 2Na + Cl2. apex

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

B. s2o6

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