Exploring Atomic Structure and Reactions

Front

What is the Lewis Dot Diagram used for?

Back

The Lewis Dot Diagram is used to represent the valence electrons of an atom and to visualize how these electrons can bond with other atoms.

Front

What is the balanced equation for the reaction of hydrogen and oxygen to form water?

Back

The balanced equation is @@2 ext{H}_2 + ext{O}_2 ightarrow 2 ext{H}_2 ext{O}@@.

Front

What is a chemical property? Give an example.

Back

A chemical property is a characteristic of a substance that becomes evident during a chemical reaction. Example: Reactivity with acid.

Front

How do you calculate density?

Back

Density is calculated using the formula: Density = Mass/Volume.

Front

What is the density of an object with a mass of 4g and a volume of 2cm³?

Back

The density is 2 g/cm³.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the components are not evenly distributed, and different parts can be seen.

Front

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

Back

A physical property can be observed without changing the substance's identity, while a chemical property can only be observed during a chemical change.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms for each element is the same on both sides of the equation.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons are the outermost electrons of an atom and are involved in forming bonds with other atoms.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together in a fixed ratio.