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Descrição
FlashCards por Elli Humphreys, atualizado more than 1 year ago
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Criado por Elli Humphreys
mais de 8 anos atrás
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| Questão | Responda |
| What is an element? | An element is any substance that cannot be broken down into simpler substances. |
| What are rows? | They are in the periodic table and are also called 'periods'. They are horizontal. |
| What are groups? | A group is also a column in the periodic table and is vertical |
| What are valence electrons? | Electrons in the outermost shell |
| What are atoms mostly made up of? | empty space |
| Does an atom have a charge? | no |
| How can you tell the amount of electrons an element has? | By the row the element is in |
| What are molecule? | A group of atoms bonded together |
| What is a bond | A strong force of attraction holding atoms together in a molecule |
| What is a compound? | A substance in which two or more different elements are chemically bonded |
| What is an isotope? | Atoms of the same element that have the same number of protons but different number of neutrons |
| What is the mass number? | The amount of protons and neutrons in an atom |
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