6th Grade Science: States of Matter, Density, and Periodic Table Basics

A set of 22 vocabulary flashcards covering basic 6th grade science concepts including states of matter, kinetic energy, density, and classifications on the periodic table.

States of Matter

The three states of matter: solids, liquids, and gases.

Structure of Solids

State of matter where atoms/molecules are closely packed in a fixed arrangement.

Structure of Liquids

State of matter where atoms/molecules are close but can move around each other.

Structure of Gases

State of matter where atoms/molecules are far apart and move freely.

Shape of Solids

Solids have a definite shape.

Shape of Liquids

Liquids take the shape of their container.

Shape of Gases

Gases spread out to fill the shape of their container.

Volume of Solids

Solids have a definite volume.

Volume of Liquids

Liquids have a definite volume but take the shape of their container.

Volume of Gases

Gases have no definite volume and expand to fill their container.

Kinetic Energy in Gases

Gases have high kinetic energy; particles move rapidly and freely.

Kinetic Energy in Solids

Solids have low kinetic energy; particles vibrate but do not move freely.

Kinetic Energy in Liquids

Liquids have medium kinetic energy; particles can move around each other.

Density

A measure of how much mass is in a certain amount of space.

Honey (Density)

A substance that is more dense than dish soap.

Oil (Density)

A substance that is less dense than water.

Floating of Oil

Oil floats on water because oil is less dense than water.

Floating of Ice

Ice floats on water because ice is less dense than liquid water.

Metals

Elements that are typically shiny, malleable, ductile, and good conductors of heat and electricity.

Nonmetals

Elements that are generally not shiny, brittle, and poor conductors of heat and electricity.

Metalloids

Elements that have properties of both metals and nonmetals.

Rare Earth Metals

A group of $17$ elements known for their unique properties and importance in modern technology.