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Atomic structure JC
Main terms in Atomic structure & Periodic table
| Question | Answer |
|---|---|
| What is the definition of Atomic number? | The number of protons in an atom |
| What sub atomic particles are found in the nucleus? | Protons and Neutrons |
| What is the mass number of an atom? | The mass number is the number of protons and neutrons in an atom |
| What terms describe the particles found in the atoms? | Sub-atomic particles |
| How many naturally occurring elements are there? | 92 |
| Definition of an atom? | Smallest particle of an element that still has the properties of that element |
| Charge on an electron | Negative |
| How many groups are there on the Periodic table? | 8 |
| Group 1 are called? | Alkali metals |
| Group 8 are called? | Noble |
| The charge on a proton? | Positive |
| He discovered the Periodic table? | Dimitri Mendelev |
| Elements are arranged in the Periodic table according to? | Increasing Atomic number |
| Group 2 are called? | Alkaline Earth metals |
| The gas formed when group one metals react with water? | Hydrogen |
| The particles found in the nucleus of the atom? | Protons and Neutrons |
| The group number tells you? | How many electrons in the outer shell |
| The period number tell you? | How many shells/orbits the atom has |
| Reactivity increases going across the Periodic table? True or False | False, decreases going across table |
| Which is the most reactive of these 3 group 1 metals? Sodium, Potassium, Lithium | Potassium |
| What are the two types of chemical bonding? | Ionic and covalent bonding |
| Ionic bonding occurs between a metal and a _____________ | non-metal |
| Elements react because they want to achieve a __________ outer shell of __________ electrons | full, eight |
| The metal becomes _____________ charged when it loses an electron | positively |
| An element that has lost or gained electrons to become charged is known as a _____________ | Ion |
| Where electrons are shared this is known as _______________ bonding | Covalent |
| Covalent bonding occurs between two ___________ ____________ | Non-metals |
| Sodium chloride and magnesium oxide have what type of bonding | Ionic |
| When a element gains electrons it becomes ____________ charged | Negatively |
| Water, methane and carbon dioxide have what type of bonding? | Covalent |