Mendeleev - Study guides, Class notes & Summaries

AQA GCSE Chemistry - Paper 1 Questions And Answers 2024. What is the charge of a proton? - CORRECT ANSWER +1 What is the charge of a neutron? - CORRECT ANSWER 0 What is the charge of an electron? - CORRECT ANSWER -1 What is the relative mass of a proton? - CORRECT ANSWER 1 What is the relative mass of a neutron? - CORRECT ANSWER 1 What is the relative mass of an electron? - CORRECT ANSWER Very small How many types of atoms do elements contain? - CORRECT ANSWER Only one type ...

GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED What does 'aq' mean? - answer Aqueous - it is dissolved in water Water - formula - answer H20 Ammonia - formula - answer NH3 Carbon Dioxide - formula - answer CO2 Hydrogen - formula - answer H2 Chlorine - formula - answer Cl2 Oxygen - formula - answer O2 Ammonium (ion) - formula - answer NH4 (+) Hydroxide (ion) - formula - answer OH (-) Nitrate (ion) - formula - answer NO3 (-) Carbonate (ion) -...

1. What is the charge of a proton? - Ans .+1 2. What is the charge of a neutron? - Ans .0 3. What is the charge of an electron? - Ans .-1 4. What is the relative mass of a proton? - Ans .1 5. What is the relative mass of a neutron? - Ans .1 6. What is the relative mass of an electron? - Ans .Very small 7. How many types of atoms do elements contain? - Ans .Only one type 8. What are compounds? - Ans .Substances containing two or more different elements that are chemically bonded together...

Atom definition The smallest component of an element Compound Two or more elements, chemically joined in fixed proportions. They can only be separated by chemical means. Mixture Two or more elements/compounds which are not chemically combined. Ways to separate mixtures - Filtration - Evaporation - Crystallisation - Simple distillation - Fractional distillation - Paper chromatography The plum and pudding model Before electrons were discovered, people thought that atoms were indivi...

GCSE CHEMISTRY Higher Tier Paper 1H H SPECIMEN MATERIAL IB/M/SAMs2/E1 8462/1H Downloaded by nipsey scott () lOMoARcPSD| 2 Do not write outside the box 0 1 Figure 1 shows an outline of the modern periodic table. Figure 1 J, L, M, Q and R represent elements in the Periodic Table. 0 1 . 1 Which element has four electrons in its outer shell? [1 mark] Tick one box. J L M Q R 0 1 . 2 Which two elements in Figure 1 are in the same period? [1 mark] and 0 1 . 3 Which element ...

GCSE EDEXCEL TRIPLE SCIENCE CHEMISTRY PAPER 2 2024/2025 QUESTION PAPER ALREADY PASSED What does 'aq' mean? - answer Aqueous - it is dissolved in water Water - formula - answer H20 Ammonia - formula - answer NH3 Carbon Dioxide - formula - answer CO2 Hydrogen - formula - answer H2 Chlorine - formula - answer Cl2 Oxygen - formula - answer O2 Ammonium (ion) - formula - answer NH4 (+) Hydroxide (ion) - formula - answer OH (-) Nitrate (ion) - formula - answer NO3 (-) Carbonate (ion) -...

RADT 1065 Chapter 2 Test Questions and Answers All Correct How many atoms are there in one molecule of sodium bicarbonate (NaHCO3)? - Answer 6 Which of the following physicists had a major part in describing the atom as we know it today? - Answer Bohr The periodic chart of elements is attributed to: - Answer Dimitri Mendeleev Rutherford made what significant contribution to science? - Answer description of the nuclear atom The difference between x-rays and gamma rays is: - An...

What is the charge of a proton? -Answer +1 What is the charge of a neutron? -Answer 0 What is the charge of an electron? -Answer -1 What is the relative mass of a proton? -Answer 1 What is the relative mass of a neutron? -Answer 1 What is the relative mass of an electron? -Answer Very small How many types of atoms do elements contain? -Answer Only one type What are compounds? -Answer Substances containing two or more different elements that are chemically bonded toge...

Chapter 2 Copyright Macmillan Learning. Powered by Cognero. Page 1 1. Who was the first person to have a part of his/her body X-rayed? a. Marie Curie b. Anna Röntgen c. Dmitri Mendeleev d. Bertha Wilhelm ANSWER: b 2. Which is defined as the emission of energy? a. beta particles b. radiation c. electron smear d. X-rays ANSWER: b 3. Which of the following can break down atoms? a. chemical reactions b. radiation c. nuclear means d. exposure to X-rays ANSWER: c 4. ________ matte...

Proton c/m? - correct answer +1, 1 Neutron c/m? - correct answer 0, 1 Electron c/m? - correct answer -1, 1/1500 Mass number? - correct answer Num of protons + neutrons Atomic number? - correct answer Num protons Isotope? - correct answer Different atom of the same element, same num protons. Diff ...