Which of the following covalent compounds conduct electricity? a) Silica b) Graphite c) Diamond d) Hydrogen chloride

Q: Give the systematic name of each covalent compound. Spelling counts. SF2 : P4S3 : CO : P3N5:…

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Q: Question 4 The density of a steel block that has mass of mass 42 gm and a volume of 6 cm³ is 07…

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Q: Group of materials that are hard and brittle but are good insulators. A) Polymers (B) Ceramics C)…

A: Polymers are hard as well as flexible. They are tough at high temperature but at lowest temperature…

Q: QUESTION 7 Define Acid ? A substance with pH less than 7 and turns blue litmus red A substance with…

A: Acid and Alkali (base) can be defined as per the below points PH level action with litmus paper.

Q: Which substance is an element? O 1. CH4 O 2. NaCl O 3. N2 O 4. NO2

A: N2 is an element. N2 is the nitrogen atom or element.

Q: Which law of physics states "Chemical energy is a form of potential energy stored within chemical…

A: Ans :C) Law of energy conservation The law of conservation of energy states that energy can neither…

Q: A pure substance made up of the same kind of atoms is called

A: A pure substance made up of the same kind of atoms is called ? we have to answer the above statement

Q: Write and explain for all of argon , silicon ,carbon dioxide, sodium Azide Argon Appearance, Melting…

A: Electric conductivity 1000 S/m Melting point of silicon is 1683 K Boiling Point 3538 K Silicon is…

Q: What alloy? What are the reasons for its manufacture? this Explain

A: Alloy - alloy is a substance that are made from combination of more than one metal or mixes a metal…

Q: Protons are positively charged and found only inside the nucleus of the atom. Group of answer…

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Q: At what temperature does liquid water have the highest density? A) 100 c B) 4 c C) 0 c D) -7 c

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Q: In reactions to form ionic compounds, non- metals generally

A: In reactions to form ionic compounds , non metals generally ? we have to complete above statement

Q: Which of the following substances is NOT homogeneous? O 1. iron O 2. water 3. sand O 4. sugar

A: Homogeneous mixture is uniform composition

Q: QUESTION 13 According to naming rules, the types of compound that use prefixes in their names are A)…

A: Types of compounds that use prefixes in their names.

Q: d. True/False: you can compare any two Ksp values for any salts to know which is more soluble in…

A: Given : To find whether True/False and Justify