Chemical Bond

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Elies Tiya

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Chemical Bond


Froggy Jumps Chemical BondVersión en línea Choose the correct answer por Elies Tiya 1 How many electrons are there in an atom of carbon? a 6 b 4 c 8 2 How many neutrons are there in an atom of boron? a 7 b 6 c 4 3 What is the name of the element that has the electronic structure 2.8.3? a Oxygen b Carbon c Aluminium 4 What is the trend in the boiling points of group 1 elements? a The boiling points decrease as down the group b The boiling points increase as down the group c The boiling points the same all the group 5 What prediction can you make about the boiling points of rubidium? a It is greater than 777oC b It is lower than 777oC c The same with 777oC 6 What similarity is there in the structure of these atoms (group 1)? a Outer shell contain two electrons b Outer shell contain one electron c Outer shell contain four electron 7 Suggest why this group of metals is called group 1? a Because there is two electrons in the outer shell b Because there is three electrons in the outer shell c Because there is one electron in the outer shell 8 Are the halogens metal and non metals? a non metals b metals c mixture between metal and non metals 9 Would you expect iodine to be more or less reactive than bromine? a More reactive b Less reactive c Inreactive 10 Suggest why this group is called group 7? a Because, each element has 8 electrons in outer shell b Because, each element has 3 electrons in outer shell c Because, each element has 7 electrons in outer shell 11 What trend in melting points can be seen in group 8 ? a Increase b Decrease c The same 12 Suggest wht this group is called group 8 ? a The atoms of each element have 7 electrons in their outher shell b The atoms of each element have 6 electrons in their outher shell c The atoms of each element have 8 electrons in their outher shell 13 What is the electronic structure of a sodium ion? a 2.8 b 2.8.1 c 2.8.2 14 What is the symbol for a chlorine ion? a Cl+ b Cl c Cl- 15 How many ions of chlorine react with one ion of calcium to form calcium chloride? a 1 b 2 c 3 16 What is the chemical formula for calcium oxide? a H2SO4 b NaCl c CaO 17 What is the chemical formula for calcium chloride? a MgCl2 b CaCl2 c NaCl 18 What is the formula for a molecule or methane, a molecule of carbon dioxide, and a molucule of nitrogen? a CH4, CO2, and N2 b CO, CH4, and H2 c O2, CH4, and CO2 19 When a metal joins with a non metals, is a covalent or an ionic compound made? a A covalent compound b An ionic compound c Chemical compound 20 What is a macromolecule ? Give an example a A simple molecule, examples : calcium oxide b Mixture between simple and giant molecule, examples : natrium dioxide c A giant molecule, examples : silicon dioxide 21 Is magnesium chloride an ionic compound or simple molecule with covalent bonds? a Ionic compound b simple covalent compound c giant covalent compund 22 Is ammonia a solid, liquid or gas at room temperature? a A solid b A gas c A liquid 23 The elements all react with water to produce a gas. Name the gas ? a Oxygen b Carbon dioxide c Hydrogen 24 What is the formula for a molecule of methane ? a CH4 b CO2 c NH3 25 What is the name when atoms gain or lose electrons? a Covalent b Chemical changes c Ionic

Chemical Bond

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Chemical BondVersión en línea

por Elies Tiya

How many electrons are there in an atom of carbon?

How many neutrons are there in an atom of boron?

What is the name of the element that has the electronic structure 2.8.3?

What is the trend in the boiling points of group 1 elements?

What prediction can you make about the boiling points of rubidium?

What similarity is there in the structure of these atoms (group 1)?

Suggest why this group of metals is called group 1?

Are the halogens metal and non metals?

Would you expect iodine to be more or less reactive than bromine?

Suggest why this group is called group 7?

What trend in melting points can be seen in group 8 ?

Suggest wht this group is called group 8 ?

What is the electronic structure of a sodium ion?

What is the symbol for a chlorine ion?

How many ions of chlorine react with one ion of calcium to form calcium chloride?

What is the chemical formula for calcium oxide?

What is the chemical formula for calcium chloride?

What is the formula for a molecule or methane, a molecule of carbon dioxide, and a molucule of nitrogen?

When a metal joins with a non metals, is a covalent or an ionic compound made?

What is a macromolecule ? Give an example

Is magnesium chloride an ionic compound or simple molecule with covalent bonds?

Is ammonia a solid, liquid or gas at room temperature?

The elements all react with water to produce a gas. Name the gas ?

What is the formula for a molecule of methane ?

What is the name when atoms gain or lose electrons?