Atomic basics
What are the 3 main subatomic particles found in an atom?
What are protons, Neutrons, and Electrons
What is molecule
What do we call the substances that are present before a chemical reaction starts?
What are reactants
Is this equation balanced? H2 + O2 --> H2O
What is no
What type of charge does a neutron have?
What is neutral
Which subatomic particle has a positive charge?
What is proton
What is formed when 2 or more atoms chemically bond together?
What is molecule
What reaction releases energy into its surroundings?
What is exothermic
Balance __H2 + ___O2 --> ___H2O
What is 2H2 + O2 --> 2H2O
Is hot water endothermic or exothermic?
What is exothermic
Which 2 subatomic particles are found inside the nucleus?
What are protons and neutrons
How many total atoms are in H2O?
What is 3 atoms
Is cooking an egg endothermic or exothermic?
What is endothermic
Balance: __N2 + __H2 --> __NH3
What is N2 + 3H2 --> 2NH3
How many electrons can the first energy shell hold?
What is 2 electrons
An atom has 8 protons, 7 neutrons, and 8 electrons. What is its atomic number?
What is 8
How many total atoms are in C6H12O6?
What is 24 atoms
What does the coefficient tell you in a reaction?
What is how many of that molecule there is
Balance: __CH4 + __O2 --> __CO2 + __H2O
What is CH4 + 2O2 --> CO2 + 2H2O
What does the atomic number represent?
What are the number of electrons/protons
What is the definition of matter?
What is anything that takes up space and has mass
How many oxygen atoms are in 3CO2?
What is 6 atoms
What does the Law of Conservation of Mass state?
What is matter cannot be created nor destroyed
Balance: __Ca(OH)2 + __HCl --> __CaCl2 + __H2O
What is Ca(OH)2 + 2HCl --> CaCl2 + 2H2O
What do valence electrons tell us about the element?
What is how it interacts with other atoms/what type of bond it will have