Term 1 Grade 6 Notes: Properties of Matter and Changes

Vocabulary flashcards generated from Term 1 Grade 6 Notes covering physical and chemical properties of matter, signs of chemical changes, and environmental applications.

Chemical Properties

Characteristics that tell us how a substance can change into something new and describe its ability to react with other materials.

Flammability

A chemical property describing the ability of a substance to catch fire and burn (e.g., wood is flammable, water is not).

Reactivity

The ability of a substance to combine or react when mixed with other materials like water or air.

Ability to Rust

A chemical property where certain metals react with oxygen and water to form rust (e.g., iron rusts, aluminum does not).

Toxicity

A chemical property describing whether a substance is harmful or poisonous to living things.

Acidity or Basicity (pH)

A chemical property indicating whether a substance is an acid (such as vinegar) or a base (such as baking soda).

Ability to Decompose

The chemical property of a substance to break down naturally over time (e.g., food and leaves decompose, plastic does not easily).

Chemical Change

A change that happens when a substance turns into something new with different materials, which cannot easily be reversed.

Precipitate

A solid that forms when two liquids mix together during a chemical change.

Thermal Conductivity

A physical property describing the ability of a material to conduct heat.

Electrical Conductivity

A physical property describing the ability of a material to conduct electricity.

Luster

A physical property describing how shiny a material is.

Corrosion

The deterioration of metal, which is classified as a chemical property.

Oxidation

A chemical property describing the ability of a substance to react with oxygen.

Composting

A beneficial environmental chemical change where food and plant waste break down into soil nutrients.

Photosynthesis

A beneficial environmental chemical change in which plants use sunlight to make food and release oxygen.

Air Pollution

A harmful environmental chemical change caused by burning fossil fuels, which creates polluting gases.

Acid Rain

A harmful environmental chemical change formed when chemicals from factories mix with rainwater and damage plants and buildings.