Matter Review

Front

Elements in a __________ have similar chemical properties.

Back

group

Front

Which of the following indicates a chemical change has occurred?

Back

Change in color

Front

All of the following are physical properties of Silver EXCEPT: Silver is white, The density of silver is 10.49 g/cm³, Silver tarnishes, The boiling point of silver is 2000°C.

Back

Silver tarnishes.

Front

What does the number 6 represent in the periodic table?

Back

atomic number

Front

What is condensation?

Back

gas to liquid

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the atomic mass of an element?

Back

The weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the law of conservation of mass?

Back

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