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Criado por Jordyn Niu
quase 9 anos atrás
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Questão | Responda |
Atom | a fundamental building block with a cluster of protons + neutrons inside the nucleus surrounded by a cloud of electrons |
Proton | A positively charged particle |
Neutron | A particle which has no overall charge |
Electron | A negatively charged particle |
nucleus | A cluster of protons + neutrons at the center of an atom |
Electron shell | A layer that surrounds the nucleus |
electron configuration | How many electrons which are contained within each layer that surrounds the nucleus |
mass number | The number of protons and neutrons in an atom |
atomic number | Number of protons in the nucleus |
element | A substance made up of only one type of atom |
compound | Made up of 2 or more elements |
Isotope | When you have the same amount of protons in the nucleus but a different amount of neutrons |
Ion | an atom that has lost electrons |
Cation | A positively charged ion |
Anion | A negatively charged ion |
Ionic bonding | A bond between a cation and an anion, their opposite charges causes a attraction towards each other |
ionic compound | A compound made up of cations and anions |
Acid | Releases H+ ions into an aqeuous solution |
Base | Releases OH- ions |
Alkaline | A base that dissolves in water |
pH scale | Used to measure the acidity in a solution |
pH indicator | Changes colour to show you if a solution is acidic, neutral or basic |
Neutral pH | not an acid or base, an example of something that would appear neutral on the pH scale is water |
Endothermic | Absorbs energy |
Exothermic | Releases energy |
Combustion | Reaction with oxygen, releases energy in the form of light and/or heat |
Complete combustion | Plenty of oxygen, produces carbon dioxide and water vapour |
incomplete combustion | Lack of oxygen, produces carbon and carbon monoxide |
Corrosion | Break down of metals |
Aerobic respiration | A reaction that uses oxygen to release energy stored in glucose |
Photosynthesis | Endothermic reaction - occurs in plants produces oxygen gas + glucose |
Reactants and products | Reactants are always written on the left hand side and products are always written on the right hand side |
How do you work out the atomic mass? | Protons + Neutrons |
How do you work out the neutrons | Atomic mass - protons |
How to work out the electrons | Same amount as the protons |
Atomic number | The number the element is on the periodic table |
When an ion gains electrons the charge becomes? | Negative |
When an ion loses electrons the charge becomes? | Positive |
Which of the proton, neutron and electron is the smallest? | Electron |
Which of the proton, neutron and electron is the heaviest? | Proton |
Which of the proton, neutron and electron is positive? | Proton |
Which of the proton, neutron and electron is negative | Electron |
Which of the proton, neutron and electron is neutral? | Neutron |
Which of the proton, neutron and electron moves around the nucleus | Electron |
Which of the proton, neutron and electron are in the nucleus? | Protons and neutrons |
What can be said about the number of protons and electrons in an atom? Why? | They are equal because there is an even amount of electrons and protons in an atom therefore making it balanced |
An atom has 8 protons, 8 electrons and 9 neutrons. What would it's atomic number and mass number be? | The atomic number would be 8 and the mass 17 |
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