704012
Descripción
Fichas por x_clairey_x, actualizado hace más de 1 año
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Creado por x_clairey_x
hace más de 10 años
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| Pregunta | Respuesta |
| What are elements made of? | Atoms |
| How many types of atom does an element contain? | One |
| How many types of atom does a compound contain? | Two or more |
| What is the basic structure of an atom? | An atom has a tiny nucleus in its centre surrounded by electrons |
| What are atoms made of? | Protons, neutrons and electrons |
| What kind of charge does an electron have? | Negative |
| What kind of electric charge does a neutron have? | No charge, they're neutral |
| What kind of electric charge do protons have? | Positive |
| What is an atomic number? | The number of Protons OR Electrons |
| What is a mass number? | The number of Protons + Neutrons |
| How are atoms arranged in the periodic table? | In order of their atomic number |
| How are electrons arranged in an atom? | In energy levels or shells |
| What determines the way an element reacts? | The number of electrons in its outermost shell |
| Why are the atoms of Group 0 elements so unreative? | They have full outer shells, making them stable |
| What does the formula of a compound show? | The number and types of different atoms bonded together to make that compound. |
| What is formed when a metal reacts with a non metal? | Ions |
| What happens in ionic bonding? | Metal atoms form positively charged ions and non-metals form negatively charged ions. These oppositely charged ions are attracted to each other in ionic bonding. |
| What is covalent bonding? | Atoms of non-metals reacting by sharing electrons. |
| Can we create new atoms? | No, atoms cannot be created or destroyed. |
| What is a balanced equation? | An equation with equal numbers of each type of atom on both sides of the arrow. |
| How is the total mass of reactants related to the total mass of the product? | They are always equal, atoms cannot be lost during a reaction. |
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