Описание презентации по отдельным слайдам:
Coin term Separation of matter Mention Subatomic рarticle Basic Universe Electrons Neutrons Protons Carelessness Carbon dioxide Helium Negative/positive charge Cosmos Вводить, создавать термин Разделение материи Упоминать Субатомная частица Основной Мироздание Электрон Нейтрон Протон Небрежность Углекислый газ Гелий Негативный/позитивный заряд Мироздание, упорядоченная система
Match these words with their definitions Subatomic Electron Neutron Molecule Proton Quantum mechanics Carbon Attracted Helium Universe Part of an atom which has no charge Two or more atoms Smaller than an atom Part of an atom that has a negative charge A theory developed by physicists to explain the atom Part of an atom which has a positive charge Pulled together A chemical element A chemical element that I slighter than air The whole cosmos
1. Dalton believed the atom to be An element Made of smaller particles The smallest possible particle His own idea 2. Dalton’s theories were Generally accepted Not tested very carefully Accepted at once Not correct 3. The number of protons in an element Is the same as the number of electrons Is always six Never changes Characterises the element Read the text and choose the correct answer.
4. Electrons help Protons to form the elements Atoms to be neutral Molecules to become atoms Atoms to form molecules 5. Hydrogen is The simplest atom there is. Present in all atoms The oldest atom As common as helium
Listen to the conversation. Then for each statement below, circle the correct word or phrase Most/some/plenty of people are already using hydrogen-powered cars. The waste from these cars is pollution/water/fumes. It’s expensive because it is new/uses hydrogen/is not common. Hydrogen is more/less/just as dangerous as petrol. Hydrogen will be used in gas/solid/liquid form.