Question

plz plz plz plz plz plz plz tell me the answer it is very important plz class 7 science​

Answer 1

Explanation:

Chronology is the science of arranging events in their order of occurrence in time. Consider, for example, the use of a timeline or sequence of events. It is also "the determination of the actual temporal sequence of past events". Chronology is a part of periodization.

Please mark me as brainliest

Answer 2

Answer:

Some common strong Arrhenius bases include:

• Potassium hydroxide (KOH)
• Sodium hydroxide (NaOH)
• Barium hydroxide (Ba(OH)2)
• Caesium hydroxide (CsOH)
• Strontium hydroxide (Sr(OH)2)
• Calcium hydroxide (Ca(OH)2)
• Lithium hydroxide (LiOH)
• Rubidium hydroxide (RbOH)

Acids: Properties and Examples

• Acids.
• Hydrochloric Acid.
• Sulfuric Acid.
• Nitric Acid.
• Carbonic Acid.
• Formic Acid.
• Citric Acid.
• Acetylsalicylic Acid.