Sub shells - Study guides, Revision notes & Summaries

Falsifiable concentrates (EC or E) - Answer-Formulations made up of the technical material, solvents and emulsifiers. Some agitation is required. Once dry, pesticide residue is barley visible. Wettable Powder (WP) - Answer-These formulations are made by impregnating or coating an appropriate powder with the technical insecticide. Wettable Powders do not dissolve in water and frequent agitation is usually required. Heavy applications may leave visible deposits. Soluble Powders (SP) - Answer-...

Q1.Which one of the following is the electronic configuration of the strongest reducing agent? A 1s2 2s2 2p5 B 1s2 2s2 2p6 3s2 C 1s2 2s2 2p6 3s2 3p5 D 1s2 2s2 2p6 3s2 3p6 4s2 D Which one of the following ionisations requires less energy than the first ionisation energy of oxygen? A S(g) → S+(g) + e− B O+(g) → O2+(g) + e− C N(g) → N+(g) + e− D F(g) → F+(g) + e− A Which one of the following is the electronic configuration of an element with a maximum oxidation s...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

Chemistry 234 Review Exam Questions And Answers (Verified And Updated) element - answer- A pure substance made of only one kind of atom - Predictable, usually - Matter made up of one type of atom - It is better to have either full or empty shells in order to have stability. A half-filled shell is unstable compound - answerA pure substance made up of atoms of two or more different elements joined by chemically extensive property - answerdepends on the amount of matter that is present, (s...

AQA 2023 AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry questions and answers verified What is the equation linking mass moles and MR? Mass=moles * MR What is the definition of Ar (relative atomic mass)? The average mass of an atom of an element compared to the mass of one twelfth of carbon 12. What does Mr stand for? Relative molecular mass Define relative isotopic mass. The mass of an isotope of an element compared to the mass of one twelfth of the mass of carbon 12 ...

Phylum Arthropoda (specifics) ~ - tagmosis: fusion of metameric body plan into functional units - growth by molding termed ecdysis - functional cilia absent (except sperm in some) - cuticle forms a rigid exoskeleton Class Hexapoda (specifics) ~ - ph. Arthropoda, sub uniramia - specialized mouth parts - metamorphosis — hemimetabllous dvlpmt - eggs > nymphs > adults - juvenile resembles adults - ie crickets, grasshoppers — homometabolous - eggs > larvae > pupa ...

Chemistry 234 Review Exam Questions And Answers (Verified And Updated) element - answer- A pure substance made of only one kind of atom - Predictable, usually - Matter made up of one type of atom - It is better to have either full or empty shells in order to have stability. A half-filled shell is unstable compound - answerA pure substance made up of atoms of two or more different elements joined by chemically extensive property - answerdepends on the amount of matter that is present, (s...

How many electrons can each orbital hold? - Answer Two How many electrons can be held in each sub shell? - Answer S - 2 P - 6 D - 10 F - 18 Put the sub shells in order do their energy, lowest to highest - Answer S, p, d and f How do we fill the p and d subshells - Answer singly first and then doubly What is an orbital? - Answer A region of space around the nucleus where there is a 95% chances of finding an electron What is the Aufbau principle? - Answer An electron...

AQA AS Physical Chemistry 2024 exam questions with 100% correct answers Who described atoms as solid spheres that make up different elements and when? - ANSWERS John Dalton in the 19th century Who suggested that atoms of a particular element had the same mass and atoms of different elements had different masses and when? - ANSWERS John Dalton in 1803 Who discovered the electron and when? - ANSWERS JJ Thomson, 1897 discovered electrons proving atoms weren't indivisible or solid. New m...