matter

• MATTER- is anything that has mass and takes up space.
• The particles in solids are close together and vibrate in place.
• The particles in solids are close together and vibrate in place.
• A solid keeps its shape even when it moves.
• The particles in liquid are not as close as the particles in solid, and move more freely than the particles in solids.
• Liquids have definite volume.
• Liquids take the shape of their container.
• Liquids can be poured from one container to another.
• The particles in gases move freely in all directions.
• Gases have no definite size or shape.
• • A gas takes the shape of its container.
• • A gas will fill all the space inside a container.
• POROSITY- is a property of material that lets it absorb water and other liquids, e.g. paper and cloth can absorb liquid well.
• POROUS- Porous materials have plenty of spaces inside where liquid can be absorbed. Materials with this property enable us to easily do some household chores such as cleaning and washing the dishes.
• NONPOROUS- materials that cannot absorb water, e.g. metal,plastic
• DENSITY - is the amount of matter that an object has. It is related to the mass and volume of an object.
• BUOYANCY- is the tendency of an object to float or rise when put in a liquid. The buoyancy of an object is affected by the buoyant force exerted on it. 
• Buoyant force- is the upward push exerted by a liquid, like water, on an object.  
• BIODEGRADABLE- materials which rots or decays. 
• Decomposers- help break down dead plants and animals, returning substances and nutrients to the soil for plants to reuse in the form of natural fertilizers. 
• NON BIODEGRADABLE- materials that do not decay.
• Ways to handle non biodegradable material were to reduce,reuse and recycle them.
• EXPLOSIVE- materials such as fireworks and dynamite
• FLAMMABLE- gasoline and ethanol
• TOXIC- substance that can cause severe headache when swallowed, inhaled, or comes in contact with skin.
• CORROSIVE- may destroy living tissues as well as some equipment.
• SEGREGATING- sorting out garbage into biodegradable or nonbiodegradable components.
• COMPOSTING- putting all biodegradable matter into a large container and adding soil to it will break down into a nutrient-rich fertilizer.
• RECYCLING- converting non biodegradable materials into useful products.
• EXTENSIVE PROPERTIES- physical properties that depend on the amount of matter present. E.g. The volume of water depends on how big the container is.
• 1. Height- how tall the object
• 1. Height- how tall the object
• 1. Length- how far are the opposing sides of the object from each other
• 1. Mass- how much amount of matter is present in the object
• 1. Volume- how much space is taken up by the substance
• 1. Amount of energy- how much energy is needed to do work
• 1. INTENSIVE PROPERTIES- properties that do not depend on the amount of matter present. E.g. the color of a black cardboard will not change even if you cut or fold it into two. Color- what makes up the appearance of a matter
• 1. Density- given the constant volume, how heavy the substance 
• 1. Malleability- can be bent easily
• 1. Magnetism- is the matter attracted to magnet