the answer is going to be 4.5
They are DIFFUSION and OSMOSIS.
Answer:
This are called compounds
Explanation:
Compounds are substances formed when two or more elements are combined, and by definite proportions they should always be in fixed ratios. The elements can be bonded together either through covalent or ionic bonding.
In a covalent bond the atoms in the compound are sharing their outermost electrons to achieve stability, for example, CF4, CH4, CH3COOH among others. Most of the organic compounds are made of covalent bonds.
In an Ionic bond atoms in the compound are losing and gaining each others' valence electron (transfer of electrons) to form and achieve stability. For example, NaCl, KOH, CaBr2, among others. Inorganic compounds are in their majorities, ionic compounds.
We also can have metallic bonds.
Answer: The metric system
Explanation:
The metric system is a measurement system using basic measurements like the meter to measure length, seconds to measure time and kilogram to measure mass, among others. This system is decimal and is used in various countries around the world doing the most recognized and internationally accepted system.
On 7 April 1795, the metric system was accepted in France as the official system of the country to unify the measurement system after the French revolution. In 1875, 17 countries signed the Treaty of the Meter becoming the most widely used and recognized system worldwide.
I hope this information can help you.
