Unit 2 Reivew: Periodic Table and Chemical Reactions

Front

What is the periodic table?

Back

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

Front

What are metals?

Back

Elements that are typically solid at room temperature (except mercury), good conductors of heat and electricity, and have a shiny appearance.

Front

What is malleability?

Back

The ability of a material, especially metals, to be deformed or shaped under compressive stress without breaking.

Front

What is electrical conductivity?

Back

The ability of a material to conduct an electric current, which is a characteristic property of metals.

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances, often indicated by changes in temperature, color, or the production of gas.

Front

What is a metalloid?

Back

Elements that have properties of both metals and nonmetals, such as silicon and boron.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in an atom's nucleus and determines the element's identity.

Front

What is a chemical reaction?

Back

A process that leads to the transformation of one set of chemical substances to another, involving the breaking and forming of bonds.

Front

What are nonmetals?

Back

Elements that are typically poor conductors of heat and electricity, and can be gases or brittle solids at room temperature.

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.