Working Scientifically

The process of substances (reactants) being converted to different substances is known as a __________.

Chemical reaction.

A __________ is a substance that increases the rate of a chemical reaction without being used up in the process.

Catalyst.

In a chemical reaction, particles must collide with sufficient energy and the correct __________ to increase the reaction rate.

Orientation.

The variable that you measure in an experiment is called the __________ variable.

Dependent variable.

For continuous data, it is appropriate to use a __________ graph to represent the information.

Line.

A reaction where one compound breaks down into two or more simpler substances is called a __________ reaction.

Decomposition.

In writing aims, it is important to keep the focus __________ and avoid broad statements.

Specific.

When tabulating results, the independent variable is typically placed on the __________ axis.

X.

To ensure reliability in experiments, it is recommended to repeat trials __________ times.

Three plus.

The difference in an experiment due to the conditions under which it is conducted is referred to as __________.

Validity.