Atoms and Molecules Review

Front

Who organized elements into the modern periodic table?

Back

Mendeleev is credited with organizing the elements into the modern periodic table based on their atomic mass and properties.

Front

Identify a metal which is a poor conductor of heat.

Back

Argon is a noble gas and does not conduct heat well, unlike metals.

Front

What is a property of an acid?

Back

Acids turn blue litmus paper red, indicating their acidic nature.

Front

What do all elements in Group 2 have in common?

Back

All elements in Group 2 have the same number of valence electrons, which is 2.

Front

Which material is most likely to be damaged by an acid?

Back

An aluminum can is likely to be damaged by an acid due to its reactivity.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are molecules?

Back

Molecules are groups of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the atomic number?

Back

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

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.