he components needed in order for an experiment to be valid is a hypothesis, a control, and variables.
Particles in solids are always vibrating (moving back and forth) in place. The vibrational motion of particles in solids is kinetic energy. Heat makes the particles in a solid vibrate faster, giving them more kinetic energy. ... When a sample of solid, liquid, or gas matter heats up, it expands.
In order the words are:
living, nonliving, biotic, plants, animals, abiotic, moisture, temperature, producers, nonliving, autotrophs, consumers, eating, and heterotrophs.
Silicon dioxide is SiO2. Silicon has 4 valence electrons, while each oxygen has 6 valence electrons. This can be shown as
** * *
** O * * Si * * O **
* * **
At points where there is one valence electron, represented by a lone *, the electrons will be 'shared' between the atoms. This will make silicon dioxide appear as
** *--------------- *
** O *--* Si * ------ * O **
*------- * **
, as the lines with no arrows indicate that each electron moves between the atoms, and does not stay with one forever.
