Atoms, Elements, Molecules, Compounds, Mixtures REVIEW

Front

What is the periodic table of elements?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, where elements with similar properties are grouped together.

Front

What are elements?

Back

Substances that cannot be broken down into simpler substances by chemical means; they consist of only one type of atom.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together in a fixed ratio.

Tags

NGSS.MS-PS1-1

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What happens to the properties of elements as you move from left to right on the periodic table?

Back

The properties change from metals to nonmetals, with a gradual transition in characteristics.

Front

What is the significance of period numbers in the periodic table?

Back

Period numbers indicate the number of electron shells in the atoms of the elements in that row.

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element, consisting of protons, neutrons, and electrons.

Tags

NGSS.MS-PS1-1

Front

Give an example of a compound.

Back

Sodium chloride (NaCl) is a common example of a compound.

Front

What is the difference between a molecule and a compound?

Back

A molecule is two or more atoms bonded together, while a compound is a specific type of molecule that contains at least two different elements.

Tags

NGSS.MS-PS1-1

Front

Can mixtures be separated?

Back

Yes, mixtures can be separated by physical methods such as filtration, distillation, or evaporation.