I think the particle starts to move slowly around because no heat or pressure is applied to it
Answer: 
Explanation:
Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and are present in an aqueous state and represented in the form of ions.
Net ionic equation : In the net ionic equations, we do not not include the spectator ions in the equations.
Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.
The complete balanced ionic equation will be:
In this equation, 
are the spectator ions.
By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.
The net ionic equation will be:
The atoms in air are combined with oxygen present in the air and when we inhale the air, oxygen is moved into the body then atoms in oxygen are carried by red blood cells the blood is pumped to the lungs and when oxygen is transported to the body organ, the atoms in lungs become the part of human cells.
Answer:
(i) Change in colour (ii) Change in temperature (iii) Formation of precipitate
Explanation:
(i) Change in colour: Reaction between lead nitrate solution and potassium iodide solution. Pb(NO3)2(aq)+2KI → PbI2(s)+2KNO3(aq) In this reaction, colour changes from colourless to yellow. (ii)Change in temperature: Action of dilute sulphuric acid on zinc. Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2 In this reaction, heat is evolved (iii) Formation of precipitate: Action of barium chloride on sodium sulphate. BaCl2(aq) +Na2SO4(aq) → BaSO4(s) +2NaCl(aq) BaSO4(s)
1: What is the smallest part of a compound called?
mixture
element
atom
molecule
2: One molecule is made of two or more _____ bonded together.
nuclei
mixtures
atoms
compounds
3: Which of the following is a pure substance that can't be separated by physical means, and can't be decomposed into other substances by chemical means?
compound
molecule
mixture
element
4: A substance that cannot be separated physically is called a substance
heterogenous mixture
homogenous mixture
pure substance
mixed substance
5: Which term below represents a pure substance that can be separated chemically, but cannot be separated physically, that is made up of two or more different atoms?
mixture
element
molecule
chemical bond
6: Water is formed when two hydrogen atoms bond to an oxygen atom.
True
The hydrogen and the oxygen in this example are different __True_____________.
