GCSE AQA Chemistry 2024 ACTUAL EXAM QUESTIONS AND VERIFIED ANSWERS /GET IT 100% ACCURATE|ALREADY GRADED A+

GCSE AQA Chemistry 2024 ACTUAL EXAM QUESTIONS AND VERIFIED ANSWERS /GET IT 100% ACCURATE|ALREADY GRADED A+ Practice questions for this set Terms in this set (107) Learn 1 / 7 Study with Learn Protons Neutrons Electrons Draw and label an atom Protons Neutrons Electrons Choose matching term 1 Why does surface area affect the rate of a reaction? 2 What is the Haber process used to manufacture and what is the equation? 3 Draw and label an atom 4 What is the bonding in metals like? Don't know? 12/13/24, 12:23 PM GCSE AQA Chemistry 2024 ACTUAL EXAM QUESTIONS AND VERIFIED ANSWERS /GET IT 100% ACCURATE|ALREADY G… What are the masses and charges of these parts of an atom? • Proton • Neutron • Electron Protons = +ve (mass 1) Neutrons = neutral (mass 1) Electrons = -ve (mass 1/2000th) Why do atoms usually have no overall electrical charge? Atoms usually have no overall charge because they have equal numbers of protons (+ve) and electrons (- ve), which cancel one another out All atoms of a particular element (e.g. carbon) all have the same number of what? Protons What does relative atomic mass tell you about the atom? The number of protons and neutrons in the atom What does atomic number tell you about the atom? The number of protons (usually the same as the number of electrons) What is an isotope? An isotope is an atom with a different amount of neutrons How many electrons can occupy the 1st and 2nd shell (energy level) of an atom? 2 in the 1st shell and 8 in the 2nd shell The electron structure of sodium can be represented as 2,8,1 - what does this mean? Represent these atoms: - • Fluorine • Oxygen • Potassium • Magnesium 2,8,1 means 2 electrons in the 1st shell, 8 electrons in the 2nd shell and 1 electron in the 3rd shell Fluorine = 2,7 Oxygen = 2,6 Potassium = 2,8,8,1 Magnesium = 2,8,2 Define these terms: - • Element • Compound • Mixture Element - a pure substance made from 1 type of atom only Compound - 2 or more elements chemically bound Mixture - 2 or more elements or compounds mixed together which are not chemically bound 12/13/24, 12:23 PM GCSE AQA Chemistry 2024 ACTUAL EXAM QUESTIONS AND VERIFIED ANSWERS /GET IT 100% ACCURATE|ALREADY G… What happens to the electrons of 2 atoms when they chemically react? During a chemical reaction electrons are either given away, taken, or shared What is an ion? How are +ve ions formed? How are -ve ions formed? An ion is an atom with a charge +ve ions have lost electrons -ve ions have gained electrons Explain how the following atoms become ions (will they be +ve or -ve)? • Potassium • Magnesium • Chlorine • Oxygen Potassium - loses 1 electron (K+) Magnesium - loses 2 electrons (Mg2+) Chlorine - gains 1 electron (Cl-) Oxygen - gains 2 electrons (O2-) Describe the structure of ionic compounds Ionic compounds have a giant structure - they are bonded to 6 other ions by electrostatic bonds What are the melting and boiling points of ionic compounds like? Why is this? Ionic compounds have high melting points and boiling points - to melt them you have to supply enough energy to break the 6 bonds attached to each ion What happens to the electrons when atoms form ionic bonds and covalent bonds? Which is the strongest? Ionic bonds - 1 atom loses electrons and another gains electrons Covalent bonds - electrons are shared An individual covalent bond is stronger than an ionic bond What are the melting and boiling points of covalent compounds like? Explain why this is Covalent compounds have low melting and boiling points (are often gases) are there is no attraction between the molecules How are the elements of the periodic table arranged? What are the rows called? What are the columns called? Elements are arranged in order of atomic number Rows are called periods Columns are called groups 12/13/24, 12:23 PM GCSE AQA Chemistry 2024 ACTUAL EXAM QUESTIONS AND VERIFIED ANSWERS /GET IT 100% ACCURATE|ALREADY G… Which 2 elements would be out of order in the periodic table if they were arranged by atomic mass instead of atomic number? Potassium and Argon Why do elements in the same group have similar properties? Elements in the same group have similar properties as they all have the same number of electrons in their outer shell What do these symbols mean? • (s) • (l) • (g) • (aq) (s) = solid (l) = liquid (g) = gas (aq) = aqueous