elements that occur in a vertical column (top-to-bottom) on the periodic table; also called a family.
Ø Solution : Homogeneous mixture with particles so small that they cannot be seen with a microscope.
Ø Neutrons : Particles in a atom with no charge.
Ø Electrons : Particles in a atom with a negative charge.
Ø Quarks : Smaller particles in neutrons and protons.
Ø Electron Cloud : Area around a nucleus where electrons are mostly found.
Ø Atomic Number : Number of protons in an atom is equal to a number called {blank}.
Ø Mass Number : This number is the sum of the number of protons and neutrons.
Ø Isotopes : Atoms of the same element that have different numbers of neutrons.
Ø Average Atomic Mass : Is the weighted average mass of its isotopes.
Ø Periodic Table : A table filled with elements in order of atomic numbers, etc.
Ø Groups : The vertical columns in the periodic table.
Ø Electron Dot Diagram : Uses the symbol of the element and dots to represent electrons.
Ø Periods : Horizontal rows of elements.
an element below and to the left of the stair-step line of metalloids. It's malleable and has high conductivity.
the number of protons in the nucleus of an atom. This number identifies the element on the periodic table.
A neutral molecule that forms as a result of electron sharing.
addition reaction - An addition reaction is a chemical reaction in which atoms add to a carbon-carbon multiple bond.
alcohol - An alcohol is any organic molecule that has an -OH group.
aldehyde - An aldehyde is any organic molecule that has a -COH group.
alkali metal - An alkali metal is a metal in Group I of the periodic table. Examples of alkali metals include lithium, sodium, and potassium.
alkaline earth metal - An alkaline earth metal is an element belonging to Group II of the periodic table.xamples of alkaline earth metals are magnesium and calcium.
alkane - An alkane is an organic molecule that only contains single carbon-carbon bonds.
alkene - An alkene is an organic molecule that contains at least one C=C or carbon-carbon double bond.
alkyne - An alkyne is an organic molecule that contains at least one carbon-carbon triple bond.
allotrope - Allotropes are different forms of a phase of an element. For example, diamond and graphite are allotropes of carbon.
alpha particle - An alpha particle is another name for a helium nucleus, which contains two protons and two neutrons. It's called an alpha particle in reference to radioactive (alpha) decay.
amine - An amine is an organic molecule in which one or more of the hydrogen atoms in ammonia have been replaced by an organic group. An example of an amine is methylamine.
base - A base is a compound that produces OH- ions or electrons in water or that accepts protons. An example of a common base is sodium hydroxide, NaOH.
beta particle - A beta particle is an electron, although the term is used when the electron is emitted in radioactive decay.
binary compound - A binary compound is one made up of two elements.
binding energy - Binding energy is the energy that holds protons and neutrons together in the atomic nucleus.
bond energy - Bond energy is the amount of energy required to break one mole of chemical bonds.
Could you give me some example of suspension?
BalasHapusExample of suspention :
Hapus1. counter(section).mercury shaken in oil
2.counter(section).oil shaken in water
3. counter(section).powdered chalk in water
4. counter(section).dust in air
5. counter(section).soot in air
Please give me a colloid example?
BalasHapusHere are several other examples of colloids:
HapusAerosols
fog
insecticide spray
clouds
smoke
dust
Foams
whipped cream
shaving cream
How to determine the number of neutrons in the atom?
BalasHapusMassa number - atom number
HapusPlease explain about substance ? Thanks
BalasHapusA type of matter with a fixed composition.
BalasHapus