1. Kinetic energy: The energy of a moving object
2. Potential energy: Energy stored in an object or material
3. Temperature: The average kinetic energy of the molecules in a material
4. Heat: Energy that flows between objects that have different temperatures
5. Radiation: The transfer of energy by electromagnetic waves
6. Conduction: The transfer of energy by direct contact of molecules
7. Convection: The transfer of energy by the flow of a liquid or gas
8. Insulation: Prevents heat from flowing in or out of a material
Science
lunes, 11 de abril de 2011
Vocabulary # 3 Chemical Changes
1. Compound: A chemical combination of two or more elements
2. Chemical bond: A link that atoms or electrically charged particles can form with each other
3. Chemical formula: a way of using letters and numbers to show how much of each element is in a substance.
4. Ion: An electrically charged particle with unequal numbers of protons and electrons.
5. Molecule: A group of bonded atoms that acts like a single particle
6. Chemical property: A way of describing how a substance changes chemically with other substances.
7. Exothermic: A reaction that gives off heat
8. Endothermic: A reaction that absorbs heat
2. Chemical bond: A link that atoms or electrically charged particles can form with each other
3. Chemical formula: a way of using letters and numbers to show how much of each element is in a substance.
4. Ion: An electrically charged particle with unequal numbers of protons and electrons.
5. Molecule: A group of bonded atoms that acts like a single particle
6. Chemical property: A way of describing how a substance changes chemically with other substances.
7. Exothermic: A reaction that gives off heat
8. Endothermic: A reaction that absorbs heat
Vocabulary # 2 Elements and Atoms
1. Element: A substance that cannot be broken down any further into anything simpler.
2. Atom: The smallest particle of an element that has the same chemical properties as the element.
3. Nucleus: An atoms´s dense center, where most of it mass is.
4. Electron: A negatively charged particle that moves around an atoms nucleus.
5. Proton: a positively charged particle inside an atoms nucleus.
6. Neutron: a particle with no charge inside an atoms nucleus.
7. Atomic number: the number of protons in an atom.
8. Metal: any of a group of elements that conduct heat and electricity, is shiny and bendable.
2. Atom: The smallest particle of an element that has the same chemical properties as the element.
3. Nucleus: An atoms´s dense center, where most of it mass is.
4. Electron: A negatively charged particle that moves around an atoms nucleus.
5. Proton: a positively charged particle inside an atoms nucleus.
6. Neutron: a particle with no charge inside an atoms nucleus.
7. Atomic number: the number of protons in an atom.
8. Metal: any of a group of elements that conduct heat and electricity, is shiny and bendable.
domingo, 20 de marzo de 2011
Vocabulary #1 Physical Properties
1. Matter: Any solid, liquid or gas
2. Mass: Amount of matter in an object
3. Volume: The amount of space an object takes up.
4. Density: the amount of mass in a certain volume of material
5. Physical Property: A property that can be observed without changing the identity of a substance
6. Physical Change: a change in size, shape or state without forming a new substance
7. Solution: A mixture of one substance dissolved in another so that the properties are the same throughout
8 . Chemical Change: a change in matter the produces a new substance with different properties from the original
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