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Matter exists as solid, liquid, and gas., Chemical changes are…
Matter exists as solid, liquid, and gas.
Chemical changes are irreversible (new substance is formed).
MIXTURE
Air as Mixture
Nitrogen
a gas that makes up most of the air and helps plants grow.
Oxygen
a gas in the air that humans and animals need to breathe.
Carbon Dioxide
a gas released when we breathe out and used by plants to make food.
Water Vapor
water in gas form that comes from evaporated water in the air.
Seperation Techniques
Decantation
– pouring liquid to separate solids
Evaporation
– heating to remove liquid
Filtration
– using filter paper or cloth
Sieving
– separating by size
Winnowing
– using air to separate light materials
Scooping / Picking
– manual separation
Using magnets
– for magnetic materials
Importance
Helps in preparing useful products
Makes materials safe and usable
Used in daily life, homes, and industries
Types of Mixtures
Uniform (Homogeneous) Mixtures
mixtures that look the same throughout because the substances are evenly mixed.
Non-uniform (Heterogeneous) Mixtures
mixtures where the substances are not evenly mixed and can be seen separately.
Pateño, Yhessa Grace
Changes in matter happen when heat energy is added or removed.
Physical changes are reversible (no new substance formed).
BMSEE III-19
