An element is a substance made from only one type of atom (e.g. oxygen is an element made up of only oxygen atoms).
An atom is the simplest form of an element that can exist, such as a lithium atom (Li).
Atoms of different elements can be combined together to create compounds, e.g sodium oxide (Na2O).
A molecule is a combination of 2 or more atoms that form chemical bonds. When these atoms are of the same element, they can be called molecules (e.g. O3 - ozone).
However when a molecule is made up of atoms of different elements, they are classified as compounds (e.g. CO2 - carbon dioxide).
So all compounds are molecules, but not all molecules are compounds.
Answer:
Elastic collisions
Explanation:
The collision between gas particles and the container walls are elastic collisions because there is no overall loss of kinetic energy.
This is one of the assertions of the kinetic theory of gases.
Elastic collision is a form of collision in which the two molecules does not stick together. It is random and independent in nature.
Through this assumption, we can make a wide array of assumption about the properties of gases without getting it complicated.
Answer:
Oxidation
Explanation:
Mg loses 2e- for it to gain it's stability hence the reaction above is oxidation
note: Oxidation is the loss of electrons while reduction is the gain of electrons
Answer:
look it up on gogole and if that doesnt work try asking teachers or take notes in class
Explanation:
A geologist will ask an analytical chemist to help identify the minerals in a rock because an analytical chemist studies the composition of matter and, therefore, can identify the minerals.
The analytical chemist does this by determining the crystal structure as a matter of routine using X-ray and electron diffraction techniques.
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