Chemistry Final Exam

Front

What is a suspension?

Back

A type of mixture where particles settle over time, such as muddy water.

Front

What is the difference between data and conclusion in an experiment?

Back

Data refers to the observations made during the experiment, while the conclusion confirms or denies the hypothesis based on that data.

Front

What is an emulsion?

Back

A mixture of two liquids that normally do not mix well, such as oil and water.

Front

What is a period in the Periodic Table of Elements?

Back

A horizontal row in the Periodic Table, indicating elements with the same number of electron shells.

Front

How many protons are in the isotope with atomic number 29?

Back

29 protons.

Front

What is a colloid?

Back

A mixture where tiny particles are dispersed throughout a liquid or gas but do not settle out, such as milk.

Front

What is a solution?

Back

A homogeneous mixture where one substance (solute) is dissolved in another (solvent), like saltwater.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into different substances (products) through breaking and forming bonds.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it remains constant.