Atomic Structure
Draw the atom diagram for potassium (K). State how many protons, electrons and neutrons
19p, 19e, 20n
Explain why carbon can form four bonds with four other atoms. Draw a diagram to support your answer.
Carbon can form four bonds with four atoms because it has 4 valence electrons and therefore has space to share four electrons with four other atoms.
Draw the formation of Li2S (ionic bonding)
Check for correct diagrams.
How many protons, electrons, and neutrons does Neon have?
Explain the difference between starch and glucose. Draw a representation of starch and glucose to support your answer.
Speed of energy supply: starch is slow release, glucose is quick release
How many electrons would calcium gain or lose. When it becomes an ion, what charge does it have?
Lose 2 electrons and therefore would have a +2 charge once it becomes an ion.
What is the electron arrangement for Fluorine?
2, 7 (9e)
Hydrogen only has 1 electron. To make it stable it needs to fill its valence shell by sharing one electron with oxygen.
Oxygen has two shells, the valence shell needs 8 electrons to be stable. Oxygen starts with 6 valence electrons and needs to share two to make it stable.
Define an ion. Draw the formation of NaCl to support your answer.
Ions are formed when atoms lose or gain electrons to achieve a full outer shell. This results in the atom having a positive or negative charge.
How many valence electrons does Magnesium have? Draw the atom.
2
What type of bonding is in a carbohydrate (or sugar molecule).
Describe how this type of bonding holds atoms together.
Covalent bonding.
They share pairs of valence electrons
In our energy drink, what compounds are examples of ionic bonding?
Salts (electrolytes)
Name the 3 subatomic particles and describe their location and charge.
Neutron: nucleus and neutral
Proton: nucleus and positive
Electron: in out shells (orbiting nucleus) and negative
What molecules give us energy from an energy drink?
Carbohydrates - sugars. Ex. Starch converting to glucose
What type of bonding is form between salts (ex. NaCl)
Describe how this bond holds the atoms together
Ionic bonding
Electrons are transferred from one atom to another resulting in positive and negative ions. The electrostatic attractions between the positive and negative ions hold the compound together.