Answer and Explanation:
DIFFERENCE BETWEEN ELEMENT AND COMPOUND :
- An element is made up of same type of atoms whereas a compound is made up of different type of atoms.
- A compound can be separated by chemical methods but an element can not be separated by chemical methods.
- Example of element is Cu Fe C and example of compound is
etc - Elements can not be split into different substances but compound can be splited into different substances
Answer:
1. How do metals and non-metals react with acids?
Ans : Non metals does not react with acids while metals react with acids and produce hydrogen gas that burns with a 'pop'sound.
2. Write and explain the chemical equation for the reaction of magnesium with sulphuric acid and aluminium with hydrochloric acid.
Magnesium + sulphuric acid = Hydrogen + salt
Mg(s) + H2SO4 (aq) MgSO 4(aq) +H2 (g)
Aluminium + Hydrochloric acid = Hydrogen + Aluminium chloride
2Al(s)+6HCl(aq)→2AlCl3(aq)+3H2(g)
Answer:
The independent variable in this experiment is what he feeds the chickens (rice or corn).
Explanation:
The independent variable is the variable the experimenter manipulates or changes.
