Difference between Scientific Terms

Difference between:

• Scalars and Vectors
• Speed and Velocity
• Heat and Temperature
• Periscope, Telemeter, and Perimeter
• Microscope and Telescope
• Element and Molecule
• Mixture and Compound
• Atomic Number and Mass Number
• Isotopes and Isomers
• Reversible and Irreversible Reaction
• Endothermic and Exothermic Reaction
• Oxidation and Reduction
• Anode and Cathode