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Interpret. Molecules and crystals
EduBook Organización
- 3010 visitas
Look at the pictures and answer the questions: In what way is a sulphur molecule different from a water molecule? In a glass of water, what is the proportion of hydrogen atoms to oxygen atoms? Describe…
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Experiment. Changes in matter
EduBook Organización
- 4026 visitas
Practise balancing the chemical equations found in the simulation at the following website and answer the questions below: www.tiching.com/100361 How many hydrogens and oxygens are needed to obtain two…
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Think about it. Matter: atoms, molecules and crystals
EduBook Organización
- 3565 visitas
Remember what you have studied in this section and answer the questions: Draw a spider diagram showing the links between atom, molecule and crystal. Describe your diagram to a classmate. Are iron atoms…
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Video: Cholesterol
Tiching explorer Organización
- 3075 visitas
This lesson shows the structure of a cholesterol molecule in 2D and 3D. We can study its vital roles and why it can be harmful, provoking heart diseases. We also learn how it is synthesized and…
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Video game: The Double Helix Game
Tiching explorer Organización
- 2041 visitas
In this game we have to first make exact copies of a double-stranded DNA molecule by correctly matching base pairs to each strand, and to then determine which organism the DNA belongs to. We can read…
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Final evaluation 1.5 - Matter and Materials
EduBook Organización
- 1507 visitas
Identify the incorrect sentences and then correct them. A chemical element is made up of different types of atoms. A molecule is made up of two or more atoms that can be the same or different. All…
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PURE SUBSTANCES AND MIXTURES
Cristina Seco Organización
- 530 visitas
Matter can be broken down into two categories: pure substances and mixtures.Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be…
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Unit 8: The Earth, a Living Planet
EduBook Organización
- 2109 visitas
Asexual reproduction (n): the process of reproduction of a single organism by itself. autotroph (n): an organism that produces its own food for nutrition. bioelement (n): any of the chemical elements…
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Understanding the text 01
EduBook Organización
- 950 visitas
Choose the correct ending to complete these sentences. Four young people Sergeant Chan and his officers broke the front door, Ben Bradley did not have a home, Barbara Dell and her friends discovered a…
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