Atomic Structure & Periodic Table
This subatomic particle occupies energy levels, also known as shells, around the nucleus.
What is an electron?
This type of bond forms through the electrostatic attraction between oppositely charged ions.
What is an ionic bond?
When an acid reacts with an alkali, it produces two products—name them.
What is "salt and water"?
This process explains oxygen moving from the alveoli into the blood.
What is diffusion?
In humans, anaerobic respiration produces this substance.
What is lactic acid?
This model of the atom shows electrons arranged in shells around a central nucleus.
What is the Bohr model?
This bonding model explains why metals conduct electricity. What bond is this and state its feature.
What is metallic bonding with delocalised electrons?
A chemical reaction can be defined as this process involving atoms.
What is the rearrangement of atoms?
During inhalation, this muscle contracts and moves downward.
What is the diaphragm?
This colourless liquid is produced when yeast breaks down sugars without oxygen, and its chemical formula is C₂H₅OH. Name this compound.
ethanol
Elements in this vertical column of the Periodic Table have similar chemical properties.
What is a group?
This chemist developed a diagrammatic method using dots to represent outer-shell electrons, helping explain how covalent bonds form.
Who is Gilbert N. Lewis?
This type of reaction produces a salt and hydrogen gas.
What is an acid–metal reaction?
Air moves in and out of the lungs because the size of the chest changes.
Part 1: When the chest expands, the air pressure inside the lungs __________.
Part 2: As a result, air __________ the lungs.
Part 1: What is decreases?
Part 2: What is moves into?
This explains why aerobic respiration is more efficient than anaerobic respiration.
What is "that it releases more energy per glucose molecule"?
_____________, a Russian chemist, arranged elements in his Periodic Table based on _______________, which allowed him to predict the existence and properties of missing elements.
Who is Dmitri Mendeleev and what is atomic mass?
This colourless, odourless gas is toxic, produced when fuels burn incompletely, and contains a carbon atom double-bonded to an oxygen atom. Name the type of bonding present and the name of the compound.
What is covalent bonding, and what is carbon monoxide (CO)?
Daily double! Increasing _________ gives reacting particles more kinetic energy and increases reaction rate.
What is temperature?
These structures control gas exchange in plant leaves, and this type of cell opens and closes them to regulate water loss. Name both.
What are stomata and guard cells?
This microorganism can survive in both aerobic and anaerobic conditions.
What is a yeast?
This non-metal is crucial for plant growth, commonly found in fertilizers, and has five electrons in its outer shell; Mendeleev predicted its chemical behavior before it was fully understood.
What is phosphorus?
This element forms a diatomic molecule with one of the strongest covalent bonds known, making it chemically unreactive despite its abundance in air. Name the element and the type of bond between its atoms.
What is nitrogen, and a triple covalent bond?
This type of reaction was historically used to extract metals from their ores using carbon before electricity was widely available.
What is reduction using carbon?
This condition affects the tubes that carry air to your lungs. People with it often have a persistent cough and difficulty breathing. Name this respiratory disease.
What is bronchitis?
Plants take in carbon dioxide and release oxygen during photosynthesis, and they also use oxygen to release energy during respiration. Write the balanced chemical equation for photosynthesis AND for aerobic cellular respiration in plants.
What is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
What is C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O?