Chemical Equations
What does a chemical equation show about a reaction?
What are the identities of the molecules and whether they are reactants or products?
What does a subscript show?
What is the number of atoms of that element?
Define synthesis.
What is combining substances into a more complex substance?
Synthetic materials are made by......
Who are humans?
Define the Law of Conservation of Mass.
What is matter is neither created nor destroyed?
What side are products written on?
What is the right side of the arrow?
If there is no subscript, how many atoms are present?
What is one?
Define decomposition.
What is breaking a compound into simpler substances?
What are natural resources?
What are materials found in the environment that humans use?
What is an open system?
What is a system where matter can enter or escape?
What does the arrow mean?
What is “yields” or “reacts to form”?
Write the basic equation structure.
What is reactant + reactant → product + product?
Define replacement.
What is one element replacing another or elements trading places?
One advantage of synthetic fibers?
What is lasting longer, drying faster, or cleaning easier?
What is a closed system?
What is a system where matter cannot enter or leave?
Name the three pieces of information a chemical equation conveys.
What are the molecules, their elements, and whether they are reactants or products?
What does a plus sign (+) show?
What is more than one reactant or product?
Classify: Mg + 2HCl → MgCl₂ + H₂
What is a replacement reaction?
One disadvantage of plastics?
What is causing pollution because they don’t biodegrade?
Why does a plant appear to gain mass in an open system?
What is carbon dioxide enters but we don’t see it?
How do coefficients help balance an equation?
What is making the number of atoms equal on both sides?
What does a chemical formula represent?
What are the elements and number of atoms in a molecule?
Classify: H₂ + O₂ → H₂O and explain why.
What is synthesis because two substances combine to make one product?
How are synthetic medicines created?
What is using chemical synthesis to copy helpful compounds from plants?
Compare and contrast open vs. closed systems.
What is open allows matter exchange and closed does not?