3 Chemical Changes in Matter

These flashcards cover key concepts related to chemical changes in matter, including definitions, indicators, activities, and environmental impacts.

Chemical Change

A change in the properties of matter that results in the formation of new substances.

Indicator of Chemical Change

A change in color when a substance is mixed with another substance.

Burning Paper Activity

Conducting an experiment where half of a piece of paper is burned to observe changes in properties.

Ignition Temperature

The specific temperature at which a fuel begins to burn.

Examples of Chemical Change

Rusting of iron, roasting of marshmallows, exploding of fireworks, and rotting of food.

Effects of Improper Waste Disposal

Leads to pollution of soil, water, and air, affecting health and environment.

Greenhouse Effect

The trapping of heat close to the Earth's surface due to greenhouse gases.

Signs of Chemical Change

Change in taste, odor, color, formation of gas or bubbles, and creation of new substances.

Impact of Temperature Change

Temperature changes can cause dehydration, flooding, and affect molecular motion.

Preventing Rust

Keep iron tools dry and apply oil to prevent oxidation.