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.
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.
tiffany´s blog
sábado, 9 de abril de 2011
sábado, 19 de marzo de 2011
Vocabulary # 2
1 element: a substance that connot be broken down any further into anything simpler
2 atom: the smallest psrticle of an element that has the same chemical propertoies as the element
3 nucleus: an atom's dense center, ahere most of its mass is
4 electron: a negatively charged particle that moves around an atom's nucleus
5 proton: a positively charged particle inside an atom's nucleus
6 neutron: a particle with no charge inside an atom's 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 psrticle of an element that has the same chemical propertoies as the element
3 nucleus: an atom's dense center, ahere most of its mass is
4 electron: a negatively charged particle that moves around an atom's nucleus
5 proton: a positively charged particle inside an atom's nucleus
6 neutron: a particle with no charge inside an atom's 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
Vocabulary # 1
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 identify 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 that produces a new substance with different properties from the original.
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 identify 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 that produces a new substance with different properties from the original.
lunes, 18 de octubre de 2010
Summary 1, Energy Resources:
What means biomass: Bio means live and Mass amount of matter.
Examples of Alternative Energy Resources:
- Wind Energy
- Water Energy
- Solar Energy
- Geothermal Energy
Do we can make methane? Yes we can make methane with many differents food, 1 food to make methane is the corn. In Brasil they produce the methane with the corn.
Summary 2, Living Things and their Environment:
Biotic is a living thing.Abiotic is a nonliving thing.
Ecosystem
Biotic Abiotic
Animals, Fungi, Protist, Plants, Bacteria Soil, Minerals, Light, Area, Rocks, Water
Summary 3, Food Chain and Food Web
Food Web
martes, 28 de septiembre de 2010
domingo, 26 de septiembre de 2010
Plasma
Plasma was first identified in a Crookes tube. Plasma, therefore, has properties quite unlike those of solids, liquids, or gases and is considered to be a distinct state of matter. Plasmas are by far the most common phase of matter in the universe, both by mass and by volume.
Suscribirse a:
Entradas (Atom)