Atoms
What are the three components that make up atoms?
Protons, Neutrons, Electrons
What is an element?
A substance made up of only one type of atom
What side of the reaction will I find the reactants?
Left side
What is the pH range of acids?
0 to 6
What is the charge of protons, neutrons and electrons
Proton = positive
Electron = negative
Neutron = neutral
What is a compound?
A substance with 2 or more atoms chemically bonded together
What do you call a reaction that uses more energy than it releases?
Endothermic reaction
What ions do acids release when dissolved in water?
H+ ions
Where are electrons located?
Orbiting the nucleus
Is water an element? Why?
Water is a compound - it is made up of 2H and 1O chemically bonded together
If I react Carbon with Oxygen, what do I product? Bonus points for the name and the chemical formula
Carbon Dioxide (CO2)
What is produced when mixing an acid with a base?
Acid + base = salt + water
What does the atomic number of an element refer to?
The number of protons
Which 2 elements bond together to make salt
Na - Sodium
Cl - Chloride
When writing chemical formulas, what does the subscript number mean? For example, H2O
It tells us how many atoms of that element are present
What is it called when you mix and acid and base to cancel each other out?
Neutralisation reaction
What sub-atomic particles are located within the nucleus?
Protons and neutrons
What element has the symbol K?
Potassium
What is the correct reaction?
a. Hydrogen + Oxygen --> Water
b. Hydrogen --> Oxygen + Water
c. Water --> Hydrogen + water
a. Hydrogen + Oxygen --> Water
What is the pH of water?
7
What do you call atoms with the same number of protons but different number of neutrons?
Isotopes
What is the lightest chemical?
Hydrogen
What is the law of conservation of mass?
Law of Conservation of Mass states that the total starting mass must equal the total resulting mass
What EXACTLY does pH measure?
The number of H+ ions dissolved in a solution