Answer: To calculate the number of molecules and atoms in a water drop, you need to know the chemical formula of water. There are two atoms of hydrogen and one atom of oxygen in each water molecule, making the formula H 2 O. So, each molecule of water contains 3 atoms. Molar Mass of Water
Explanation: Hope this helps!
From: Kenma! ^^
Answer:
Compound
Explanation:
-compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds.
<span>the movement of the liquid in a thermometer is related to the motion of the molecules of the liquid when they are heated</span>
Mass connects: Matter and Energy.
Explanation:
Hope this answer helps.
Answer: solid
Explanation: Chemical reactions are those which involve rearrangement of atoms.
Chemical changes are accompanied by following changes:
1) Absorption or release of heat
2) Change in color
3) Formation of gas bubbles
4) Formation of a solid product called as precipitate
Example of formation of precipitate or solid in chemical reaction: