Flashcard on Atoms, Molecules, and Microplastics

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus made of protons and neutrons, surrounded by electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. Molecules can be made of the same type of atoms (like O₂) or different types (like H₂O).

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How does mass affect kinetic energy?

Back

The relationship between mass and kinetic energy is positive and proportional; as mass increases, kinetic energy increases if velocity remains constant.

Front

What is the formula for calculating kinetic energy?

Back

KE = 1/2 mv², where KE is kinetic energy, m is mass, and v is velocity.

Front

What is force?

Back

Force is a push or pull on an object that can cause it to change its velocity. It is measured in Newtons (N).

Front

What is the role of shin guards in sports?

Back

Shin guards protect players' shins from injury during contact sports by absorbing and deflecting impact.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is a bond in chemistry?

Back

A bond is a lasting attraction between atoms that enables the formation of chemical compounds. Bonds can be ionic, covalent, or metallic.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.