Chemical Reactions Vocab

1.

Multiple Choice

30 sec

5 pts

a substance with a pH greater than 7; will increase the concentration of hydroxide ions in solution

acid

base

neutral

2.

Multiple Choice

30 sec

5 pts

a change from one state of matter (solid, liquid, gas) to another without a change in chemical composition

chemical change

physical change

phase change

chemical reaction

3.

Multiple Choice

30 sec

5 pts

the number placed in front of a chemical formula to indicates the number of molecules present

subscript

superscript

coefficient

4.

Multiple Choice

30 sec

5 pts

interaction between molecules that causes a chemical change, converting an existing substance into a new substance

chemical change

physical change

phase change

chemical reaction

5.

Multiple Choice

30 sec

5 pts

a symbol, usually a letter or a number, placed immediately below and to the right of a written character

subscript

superscript

coefficient

6.

Multiple Choice

30 sec

5 pts

a reaction in which one atom or ion in a compound is replaced by another atom or ion

single-replacement reactions

double-replacement reactions

acid-base reaction

synthesis reaction

7.

Multiple Choice

30 sec

5 pts

a substance that has a pH below 7; will increase the concentration of hydrogen ions in solution

acid

base

neutral

8.

Multiple Choice

30 sec

5 pts

an ionic substance (H3O+) formed when a water molecule combines with a hydrogen ion

hydroxide ion

hydronium ion

cation

anion

9.

Multiple Choice

30 sec

5 pts

the substances present before a chemical reaction occurs; in a chemical reaction the arrow usually points away from the reactant(s)

reactant

product

compound

molecule

10.

Multiple Choice

30 sec

5 pts

a chemical reaction between two compounds where the cations in two compounds switch the anions they are bonded to, resulting in two new compounds

single-replacement reaction

double-replacement reaction

acid-base reaction

synthesis

11.

Multiple Choice

30 sec

5 pts

a reaction in which two or more elements or compounds combine to form a more complex compound

acid-base reaction

neutralization reaction

synthesis reaction

decomposition reaction

12.

Multiple Choice

30 sec

5 pts

a reaction in which a substance reacts with oxygen gas to produce carbon dioxide, water, and heat

acid-base reaction

neutralization reaction

synthesis reaction

combustion reaction

13.

Multiple Choice

30 sec

5 pts

the substances that are formed during a chemical reaction; in a chemical reaction the arrows point toward the product

product

reactant

compound

molecule

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