Answer:
1. Chemical reactions
2.Substances
3. Properties
4. Precipitate
5. Light
6. Temperature
7. Color
8. Gas
Explanation:
During chemical reactions, new substances that possess new properties are formed. During the process of chemical reactions, evidences are found. Some of the evidences are formation of precipitate or light gel, production of gases and changes in color and temperature.
Chemical reactions start with the substances or compounds which are known as reactants. The reactants react to form new substances known as the products which possess new properties.
I only could help with 1 - 8 sorry.
Answer:
Explanation:
1 mol of ideal gas at STP occupies 22.4 (or 22.7 depending on the convention being used for STP) liters in volume. I will use 22.4 so 17.88*22.4 = 400.5 L
Question 3 is uniformitarianism
Question 4 is sedimentary rock
<u>Answer:</u> The atomic symbol of the given element is ![_{53}^{130}\textrm{I}](https://tex.z-dn.net/?f=_%7B53%7D%5E%7B130%7D%5Ctextrm%7BI%7D)
<u>Explanation:</u>
The general isotopic representation of an element is given as: ![_Z^A\textrm{X}](https://tex.z-dn.net/?f=_Z%5EA%5Ctextrm%7BX%7D)
where,
Z represents the atomic number of the element
A represents the mass number of the element
X represents the symbol of an element
For the given isotope: 130-iodine
Mass number = 130
Atomic number = 53
Hence, the atomic symbol of the given element is ![_{53}^{130}\textrm{I}](https://tex.z-dn.net/?f=_%7B53%7D%5E%7B130%7D%5Ctextrm%7BI%7D)