What is crystallisation - Study guides, Class notes & Summaries

what is water of crystallisation? correct answers water molecules that make up part of the crystal structure of a solid define relative isotopic mass correct answers the ass of an atom of an isotope of an element relative to one twelfth the mass of an atom of C-12 why is relative atomic mass written as a decimal? correct answers it is a weighted average mass define molecular formula correct answers the actual number of atoms of each element in a compound define what an orbital is cor...

What is Avagadro's constant? Correct Answer 6.02 x 10^23 number of particles in a mol Define empirical formula Correct Answer The simplest whole number ratio of atoms of each element present in a compound Define molecular formula Correct Answer The number and type of atoms of each element in a molecule What is water of crystallisation? Correct Answer Water molecules that are bonded into a crystalline structure of a compound What is the ideal gas equation? What are the units of each ...

1. What is a mixture? - Ans .Two or more elements not chemically bonded 2. What is the difference between a compound and a mixture? - Ans .Compounds have a fixed composition whereas mixtures do not. Mixtures are not chemically bonded but compounds are. 3. Describe the process of filtration - Ans .Pour the mixture onto the filter paper, the liquid simply passes through the filter paper into the flask. The insoluble solid cannot pass through and so it stays on the paper 4. Describe the pr...

GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024 QUESTION PAPER WITH QUESTIONS AND CORRCT ANSWERS GRADED A+ What is in the nucleus? - CORRECT ANSWER-Protons and neutrons What is relative atomic mass? - CORRECT ANSWER-Relative atomic mass is an average mass taking into account the different masses and abundances of all the isotopes that make up the element How do you calculate the relative atomic mass? - CORRECT ANSWER-Sum of (isotope abundance x isotope mass number) / sum of abundan...

▪ What are all substances made of - Ans .atoms. ▪ What is an atom? - Ans .Smallest part of an element that can exist. ▪ What is an element? - Ans .A substance that only contains one type of atom. ▪ How many elements are there? - Ans .about 100. ▪ Where are elements displayed? - Ans .In the periodic table. ▪ How are the atoms of each element represented? - Ans .different chemical symbols. ▪ What are most substances? - Ans .Compounds. ▪ What is a compound? - Ans .2 or more e...

what is water of crystallisation? - correct answer water molecules that make up part of the crystal structure of a solid define relative isotopic mass - correct answer the ass of an atom of an isotope of an element relative to one twelfth the mass of an atom of C-12 why is relative atomic mass written as a decimal? - correct answer it is a weighted average mass define molecular fo...

what is water of crystallisation? - water molecules that make up part of the crystal structure of a solid define relative isotopic mass - the ass of an atom of an isotope of an element relative to one twelfth the mass of an atom of C-12 why is relative atomic mass written as a decimal? - it is a weighted average mass define molecular formula - the actual number of atoms of each element in a compound define what an orbital is - a region within an atom that can hold up to two electrons of op...

GCSE AQA Chemistry Exam With All Answers what is a compound - ANSWER contains atoms of two or more elements which are chemically combined in fixed proportions how can compounds be separated into their component elements - ANSWER chemical reactions or electrolysis why is the total mass of products equal to the total mass of reactants - ANSWER no atoms are lost or made what is a mixture - ANSWER contains two or more elements or compounds which are not chemically...

AQA Chemistry Paper 1 Complete Solutions (Verified) C1 Atomic Structure - ANSWER What are atoms? - ANSWER Atoms are the particles that make up everything What is an element? - ANSWER An element is a substance in which all the atoms are the same Where are elements shown? - ANSWER Elements are shown in the Periodic table How many elements are there? - ANSWER There are around 118 elements What is a compound? - ANSWER A compound is a substance that c...

State the typical values for the Young's modulus of Mild Steel, Concrete, Timber and Masonry If a beam had a second moment of area (I), and was spanning a distance (L) which material property would directly influence how much it would deflect under a constant load (F)? Youngs Modulus (E) State which materials are not affected by creep and why? Masonry, generally not significant Steel, only at high temperatures State which materials are affected by creep? Timber Concr...