Answer:
A telescope, printing press, and microscope
Explanation:
Answer:
changing shape under heat and pressuremelting completely, then cooling
Explanation:
Nitrogen atom has a valence electrons of 5 electrons. A full octet or full valence electrons shell is composed of 8 electrons. Hence, an additional of 4 electrons are needed for it to become full. this is achieved by covalent bonding where electrons are shared or ionic bonding where electrons are transferred.
Answer:1 Answer. A chemical equation is balanced when the number of each kind of atom is the same on both sides of the reaction,,