Question

Define the following :
i) Metalloids ii) Ignition temperature iii) Chemical reaction
iv) Oxides v) catalyst vi) Effervescence vii) pollution viii) acid rain ix) smog x) Global warming.

Answer 1

Explanation:

the elements which act as both metals and nonmetals are called metalloids

the temperature at which a substance get Ignite is called ignation temtemperature

change in which a new substance is formed by reaction of reactants is called a chemical reaction

Answer 2

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✨Metalloid-Metalloid, a chemical element with properties intermediate between those of typical metals and nonmetals❤️

✨ ignition temperature-The autoignition temperature or kindling point of a substance is the lowest temperature at which it spontaneously ignites in normal atmosphere without an external source of ignition, such as a flame or spark.❤️

✨ Chemical reaction-a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.❤️

✨ oxides-An oxide /ˈɒksaɪd/ is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula.❤️

✨ catalysts-Catalysis is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst, which is not consumed in the catalyzed reaction and can continue to act repeatedly❤️

✨ effervesce-Effervescence is the formation of gas bubbles in a liquid by a chemical reaction. ❤️

✨ Pollution-the action of making the air, water, etc. dirty and dangerous❤️

✨Acid rain-Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).❤️

✨Smog-dirty, poisonous air that can cover a whole city❤️

✨ Global warming -Global warming is the long-term rise in the average temperature of the Earth's climate system❤️