Science Flashcard on Atomic Structure and Properties

Front

What determines the melting point of a substance?

Back

The arrangement and strength of bonds between particles.

Front

What distinguishes one element from another?

Back

The number of protons in the nucleus.

Front

Why are metals good conductors of electricity?

Back

Metals have free-moving electrons that allow energy to flow.

Front

What does a higher melting point indicate about a substance?

Back

It indicates that the substance has stronger bonds between its particles.

Front

What is the role of models in understanding atomic structure?

Back

Models simplify complex systems to make predictions about atomic behavior.

Front

What are atoms made of?

Back

Atoms are made of protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the nucleus of an atom?

Back

The nucleus is the center of an atom, containing protons and neutrons.

Front

What is an element?

Back

An element is a pure substance made of only one type of atom.