CHEMICAL REACTIONS
What are the starting materials in a chemical reaction called?
What are reactants?
What is matter?
What is anything that takes up space and has mass?
Who created the periodic table?
Who is Dmitri Mendeleev?
What is a molecule?
What is formed when two or more atoms bond together?
True or False: Chemistry only studies substances in laboratories.
What is False? (Chemistry studies substances in all aspects of life.)
What do we call the substances formed as a result of a chemical reaction?
What are products?
What are the smallest particles of matter called?
What are atoms?
How are elements organized in the periodic table?
What is by atomic number and properties?
Give an example of a molecule.
What is O2 (oxygen)?
How many known elements are there?
What is 118?
Give an example of a chemical reaction.
What is the reaction between hydrogen and oxygen to form water (H2O)? OR ANY OTHER TYPE
What are elements?
What are substances that cannot be broken down into simpler substances?
What is the symbol for oxygen?
What is O?
What is a compound?
What is a molecule that contains different elements?
What is the charge of a proton?
What is positive?
True or False: Chemical reactions only happen in laboratories.
What is False? (Chemical reactions occur constantly in living organisms.)
What three particles make up an atom?
What are protons, neutrons, and electrons?
What do elements in the same column of the periodic table have in common?
What are similar properties?
How do compounds differ from the elements they contain?
What are compounds have different properties than the elements they contain?
What is the charge of an electron?
What is negative?
What are the two main types of chemical bonds found in molecules?
What are ionic bonds and covalent bonds?
What determines the identity of an element?
What is the number of protons in its nucleus?
Name the atomic numbers of nitrogen, oxygen, carbon, and phosphorus.
What are 7 (nitrogen), 8 (oxygen), 6 (carbon), and 15 (phosphorus)?
Why are compounds important for living organisms?
What is because they form the basis of cells and biological processes?
Why is chemistry important for understanding life?
What is because every living organism relies on chemical reactions?