Atom
What are different types of atoms called?
Elements
Which atomic theory describes the atom as a positive jelly that has negative electrons inside of it?
Plumb pudding model
What type of chemical reaction requires energy from the surroundings to happen
Endothermic
Name one visible clue that a chemical reaction has taken place.
Bubbles, colour change
Name the three subatomic particles
Protons, neutrons and electrons
Which atomic model did john dalton describe?
Solid sphere model
Metal + Water-----> Metal hydroxide + _______?
Hydrogen
Mass can not be created or destroyed. what is this law called?
Law of conservation of mass
Which subatomic particles are found in the nucleus of an atom?
Neutrons and protons
Which atomic model first described a dense positive center and negativily charged particles flying around it?
Planetary model
_______?+ Sulfuric acid-------> Sodium sulfate + Hydrogen
Sodium
What are the reactands in a chemical reaction?
The initial substances that are mixed
Which subatomic particle is negatively charged?
Electrons
Neils borh proposed that electrons are not flying randomly around the nucleus but in specific rings. What are these rings called?
Shells
Metal + Acid-----> _____?+ Hydrogen
Salt
What is the word equation of:
H2 + O2 -------> H2O
Hydrogen + Oxygen ------> Water
What is the name of the philosepher who came up with the word "atom"?
Greek philosopher Democritus
What is the latest atomic model?
Quantum model
Exothermic
What is wrong with this equation
Magensium + Oxygen = MagnesiumOxide
The = should be an ------>