Q2 Science Practice Assessment

Front

What is the correct order of states of matter from least to most dense?

Back

Solid < Liquid < Gas

Front

Define a solution.

Back

A mixture containing two or more substances that has the same properties throughout.

Front

What is a pure substance?

Back

A material that cannot be separated into other substances by physical means.

Front

How does temperature affect the brightness of glow sticks?

Back

The glow stick placed in boiling water will be brightest but will last less time than the other glow sticks.

Front

What is a hypothesis?

Back

A testable prediction about the relationship between variables.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed when two or more elements are chemically bonded.

Front

What is an observation in scientific research?

Back

The act of noting and recording something with instruments or the senses.

Front

What is the role of a control in an experiment?

Back

A control is a standard against which the results of an experiment are compared.

Front

What is the importance of repeating experiments?

Back

Repeating experiments helps to verify results and ensure reliability.