Vocabulary
The substance(s) that are present at the start of a reaction
What is a reactant?
What is the number of atoms in the following compound,
Na2(SO4)3
What is
Na= 2 atoms
S= 3 atoms
O= 12 atoms
Total: 17 atoms
What is a number placed in front of a chemical symbol or formula to balance the equation?
What is a coefficient?
Deca is a prefix to determine the number of atoms of each element in a compound. Deca represents the number--
What is 10?
What does the endocrine system do?
What is regulates the body's hormones?
When a solid is formed and settles out of a liquid mixture, the solid is known as a __________.
What is a precipitate?
What is a chemical reaction in which energy is absorbed in the form of heat? Hint: starts with endo
What is endothermic reaction?
Balance the equation using coefficients
2HgO ---> Hg + O2
What is
2HgO ---> 2Hg + O2
Write the formula for this covalent compound using prefixes to determine the number of atoms of each element.
CCl4
What is carbon tetrachloride?
What is the capitol of Texas?
What is Austin, Texas.
Substances produced from a chemical equation
What is a product?
What is a chemical reaction in which energy is released in the form of heat and light? Hint: starts with exo
What is exothermic reaction?
What is a number written below and to the right of a chemical symbol showing the number of atoms of an element?
What is a subscript?
What is four pieces of evidence that a chemical reaction has occurred?
What are precipitate, gas or bubbles, color change, and temperature change?
What element preserves The Declaration of Independence?
What is Argon.
Matter that is composed of two or more elements.
What is a compound?
What are the different phases that matter exists in?
What is Solid, Liquid, Gas?
Balance the equation using coefficients
H50 + O25 ---> H2O
What is
H50 + O25 ---> 25H2O
What is the chemical formula for hydrogen peroxide?
What is H2O2?
What organ doesn't feel pain?
What is the brain?
The reactants mass must equal the mass of the products in a chemical equation. This law states that mass cannot be created or destroyed.
What is the Law of Conservation of Mass?
What happens when copper oxide forms by the reaction of iron and oxygen in the presence of moisture?
What is rust or commonly called "tarnish"
Balance the equation
S4 + O12 ---> SO3
What is
S4 + O12 ---> 4SO3
In every balanced equation, each side has the same number of _______(s).
What is atoms?
What element regulates the heartbeat and when exposed to H20 it explodes with a purple flame?
What is potassium?