Equations basics 1
A process in which one or more substances are converted into new substances with different PHYSICAL and CHEMICAL properties.
chemical reaction.
What is the name of the number 2 in N2 ?
Subscript
What are the 5 types of chemical reaction.
synthesis, decomposition, single displacement, double displacement, and combustion.
What is the product in the following synthesis reaction?
H2 + O2 ------->
H2O, Water
These are the substances present before a chemical reaction occurs. These are the substances result from the chemical reaction.
reactants and products.
An equation is balanced by A. changing subscripts B. erasing elements as necessary. C. adding coefficients.
c.
----------- reactiosn occur when an element or polyatomic ion replaces another that is part of a different compound.
Displacement reaction
What is the coefficient of NaCl in the following reaction?
Na + Cl2 --------> NaCl
2
Chemical ------------ are written to describe chemical reactions.
equations.
Chemical equations are balanced to reflect the law of -----------
law of conservation of matter.
In a --------- reaction, a complex substance breaks down into two or more simpler products.
decomposition reaction.
Fill the blank with the correct reactant:
CH4 + _________ → CO2 + 2 H2O
What does this symbol represent in a chemical equation? ----->
Yields or produce
An atom's ability to undergo chemical reactions is determined by its -------------- A. Protons. B. innermost electrons. C.outermost electrons
What is c.
Name the reaction type:
2KI + Br2 -------> 2 KBr + I2
Single displacement
During a chemical reaction (choose one):
A. New elements are produced.
B. elements are destroyed.
C. Atoms are rearranged.
c.
How are chemical reactions described?
By chemical equations.
When two reactants combine in one product, the reaction is a __________ reaction.
Synthesis.
What are the spectator ions in the following equation?AgNO3(aq) + KCl(aq) —–>AgCl(s) + KNO3(aq)
K+ and NO3 -