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Chemistry

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Kylee Homenick

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3y ago
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Cards in this guide (12)
Substance that speeds up the rate of chemical reaction

catalysts

promoters

Maxwell a Russian scientist created an early periodic table of elements

false

Atoms with a low ionization energy hold tight to their outer valence electrons

No; the phrase given characterizes high rather than low ionization.

Catalysts are that increase the rate of a chemical reaction

Catalysts are substances that increase the rate of a chemical reaction -APEX

Which process is often used to determine what coefficients to use to balance an equation

Trial and error

Who listed the elements in a table accourding to their atomic masses

Mandeleev who predicted periodic table.

Should you never change a subscript to balance an equation

False

Which one of the following is a common acid soap aspirin antacid and washing soda

Aspirin

Is this true in a chemical reaction the substances that interact are called the products

No. these are the reactants, the products are what are produced by the reaction.

Which one of the following is a balanced equation

2NH3(g) + 3Mg(s) —> 3H2(g) + Mg3N2(s)

What Are Clues That A Chemical Reaction That A Chemical Reaction May Have Taken Place

formation of a solid and release of heat. apex

The change that takes place when two or more substances what to form new substances is called a chemical reaction

(Apex) interact

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