VOCABULARIO 10

KINETIC ENERGY: the energy of a moving object.

POTENCIAL ENERGY: energy stored in an object or material.

 CONDUCTION:  movement of energy from a hot object that comes into contact with a cooler object; the material remains in place.

CONVECTION: movement of energy by the flow of the flow of matter from place to place.

RADIATION: movement of energy in the form of waves that can travel throught empty space.

WET CELL BATTERY: a battery containing liquid solution that produces the electric current.

 DRY CELL BATTERY: a battery that uses ``dry chemicals´´ to produce an electric current.

VOCABULARY 9

PHYSICAL CHANGE: a change in siza, shape, or state, without forming a new substance.

CHEMICAL CHANGE: a change in matter that produces a new substance with different properties from the original.

  CHEMICAL REACTION: a chemical change of original substances into one or more new substances.

REACTANT: one of the original substances before a chemical reaction takes place.

PRODUCT: one of the new substances produced when a chemical reaction takes place.

Proyect 2

Air Polution

I have air pollution in my neighborhood.

AIR POLLUTON: Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment into the atmosphere.

Solution: I think that we do not need that smoke in the sky.

VOCABULARY 8

MIXTURE: two or more parts blended together yet keeping their own properties and not turning into a new substance.

SOLUTION: a mixture in which substances are completely blended so that the properties are the same throughout and the substances stay blended.

SUSPENSION: a mixture of substances that separate upon standing.

COLLOID: particles (or droplets) large enough to block out light spread throughout another substance.

EMULSION: a liiquid spread through another liquid.

AEROSOL: liquid drops or solid particles spread through a gas.

GEL: a solid spread through a liquid.

FOAM: a gas spread through a liquid or solid.

SOLAR SYSTEM

SOLAR SYSTEM

VOCABULARY 7

STATE OF MATTER: any of the forms matter can exist in.

MELTING POINT:  the temperature at which a solid changes state into a liquid.

BOILING POINT: the temperature at which a liquid changes state into a gas.

FREEZING POINT: the temperature at which a liquid changes state into a solid.

VOCABULARY 6

ELEMENT: a basic building block of matter; a pure substance that cannot be broken down into anything simple.

COMPOUND: a chemical combination of two or more elements into a single substance.

ATOM: the smallest unit of an element that still has the properties of the element.

PROTON: a particle with a positive charge in the nucleus of an atom.

NEUTRON: an uncharged particle in the nucleus of an atom.

ELECTRON: a particle with a negative charge moving around the nucleus of an atom.

NUCLEUS: the dense center part of an atom.

MOLECULE: a group of more than one atom joined together that acts like a single particle.