Answer:
An ionic bond is formed between a metal and a non-metal. Covalent bonding is a form of chemical bonding between two non metallic atoms which is characterized by the sharing of pairs of electrons between atoms and other covalent bonds.
Explanation:
There are two types of atomic bonds - ionic bonds and covalent bonds. They differ in their structure and properties. Covalent bonds consist of pairs of electrons shared by two atoms, and bind the atoms in a fixed orientation. Relatively high energies are required to break them (50 - 200 kcal/mol). Whether two atoms can form a covalent bond depends upon their electronegativity i.e. the power of an atom in a molecule to attract electrons to itself. If two atoms differ considerably in their electronegativity - as sodium and chloride do - then one of the atoms will lose its electron to the other atom. This results in a positively charged ion (cation) and negatively charged ion (anion). The bond between these two ions is called an ionic bond.
Answer:
solar panels convert the sun's rays into electricity by exiting electrons in silicon cells using the photons of light from the sun. The electricity can then be used to supply renewable energy to your home or buisness.
Explanation:
hope this helps
Answer:
Many cells are specialised. They have structures that are adapted for their function. For example, muscle cells bring parts of the body closer together. They contain protein fibres that can contract when energy is available, making the cells shorter.
A large molecule made up of smaller molecules is called a macromolecule. Macromolecules are also sometimes called polymers.
The correct answer is option A and C i.e. Magma and erosion products
The magma is considered as a new product as it is formed from the lava that flows out of the volcano and is a new material produced periodically while the erosion products may not be produced at a particular place but since they are being carried away from some distant area they are new for the area where they are carried to.
