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Overall, the general trend is an increase across the period.

The decrease in shielding (as outer electrons are less influenced by the nucleus) is outweighed by an increased nuclear charge...

Acids are substances that dissolve in water to generate an excess of H⁺ ions. They react with bases to produce a salt and water. With metal carbonates, products include a salt of that metal (de...

When moving across a selectively permeable membrane, ions, polar and large molecules cannot dissolve easily in the lipid membrabe. Instead, transport must occor by way of protiens that ac...

The future tense is very easy to form and use in Arabic. Simply take the appropriate form of the verb in the present tense:

أفعل I do
تفعل You (masculine singular) do
تفعلين Yo...

Past tense verbs work exactly like present tense verbs only with a different set of modifications to show the subject of the verb:
 

فعلتُ I did
فعلتَ You (masculine singular)...