Fichas
atoms
Fichas del conjunto (12)
- 1what a atom made ofAn atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the centre of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.
- 2what are elementsAn element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron. If you change the number of protons an atom has, you change the type of element it is.
- 3what is molecular elementA compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds. Molecular hydrogen (H2), molecular oxygen (O2) and molecular nitrogen (N2) are not compounds because each is composed of a single element.
- 4what is a periodic tablea table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
- 5what are compoundsa thing that is composed of two or more separate elements; a mixture.
- 6what is crystala piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces.
- 7crystal latticethe symmetrical three-dimensional arrangement of atoms inside a crystal.
- 8what are inside atomsAnd this gave a much clearer picture of what's inside an atom. The nucleus is populated by two kinds of particles: positively charged "protons," and electrically neutral particles, called "neutrons." These particles are nearly identical to each other, except in electric charge.
- 9what is a atomic nucleiIn the nucleus, the protons are in red and neutrons are in purple. The nucleus is the centre of an atom. It is made up of nucleons (protons and neutrons) and is surrounded by the electron cloud.
- 10atomic numberthe number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.
- 11what are moleculesa group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
- 12what are molecules made ofA molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atom s that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electron s among atoms.
Información
- Descripción
- Fichas sobre atoms, creado por ahmednur ahmed el 02/05/2016.
- Creado por
- ahmednur ahmed
- Visitas
- 5
- Valoración