Chemistry Flashcard

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where faster-moving particles transfer energy to slower-moving particles.

Front

What is a chemical change?

Back

A chemical change is a process that leads to the formation of one or more new substances with different properties.

Front

How many elements are in the chemical formula H2O?

Back

There are 2 elements in the formula H2O: Hydrogen (H) and Oxygen (O).

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by ordinary chemical means.

Front

What is a compound?

Back

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

Front

What is the difference between a mixture and a compound?

Back

A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed from the chemical combination of two or more elements.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is conserved.

Front

What is an atom?

Back

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

Front

What is a molecule?

Back

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

Front

What is the difference between physical and chemical changes?

Back

Physical changes affect the form of a substance but not its chemical composition, while chemical changes result in the formation of new substances.