Atoms and Elements
A positively charged particle in the nucleus of an atom.
What is a Proton?
Two or more substances that are chemically bonded together, they cannot be separated.
What is a compound?
Characterised by a sour taste and a low pH. These substances include lemon juice, tomatoes, or vinegar.
What is an Acid?
The proper name when referring to substances used in a chemical reaction.
What are reactants?
When an atom gains or loses an electron, it becomes known by this three-letter name.
What is an Ion?
The form that any substance takes when it is at room temperature. It can change through freezing and heating.
What is state of matter?
A compound that is common household ingredient, made from Na and Cl.
What is table salt? (Sodium Chloride)
The chemical used to identify the pH of a substance, it changes colour depending on if it's an acid or a base.
What is Universal Indicator?
Evidence that a chemical reaction has taken place, they are in the form of pockets of gas in a liquid.
What are bubbles?
The outer layer of electron shells in all elements.
What is the valence shell?
A negatively charged particle that orbits the outside of an atom.
What is an electron?
Something that can be observed about an element just by looking at it.
What is a physical property?
The chemical reaction between an acid and a base that changes the pH to green (7).
What is neutralisation?
In this type of reaction, one element swaps with another in a compound.
What is a single replacement reaction?
The compound from the reaction of zinc and oxygen.
What is Zinc Oxide?
A versatile element that makes diamonds and has the chemical symbol of C.
What is Carbon?
The chemical equation of water.
What is Hydrogen + Oxygen?
A feature of a substance that is only clear AFTER it goes through a chemical reaction.
What is a chemical property?
To increase (or decrease) the rate of reaction, you could turn this up or down.
What is temperature?
The strategy we can use when balancing an ionic reaction.
What is swap and drop?
The arrangement of all the known elements. They are sorted by their atomic number and how reactive they are.
What is the periodic table?
A type of mixture where it looks like just one substance. For example, coffee or salt water.
What is a Homogenous Mixture?
What pH stands for. It shows the possibility of a certain element being present.
What is Potential for Hydrogen?
A type of reaction where a substance reacts with oxygen to create explosions (usually).
What is a combustion reaction?
A big number used in chemical reactions. It tells us how many of a specific molecule is used in a reaction.
What is a coefficient?