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 4 types of chemical reaction.
combination, decomposition, Displacement and precipitation.
what is the product in the following combination chemical 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.
----------- reaction occurs when an element replaces another element that is part of a compound.
Displacement reaction
what is the balancing 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
in the following displacement reaction :
2KI + Br2 -------> 2 KBr + I2
What is the observation for the color change?
From Colorless to purple -black
During a chemical reaction, A. New elements are produced. B.elements are destroyed. C. Atoms are rearranged.
c.
How are chemical reactions described?
By chemical equations.
when two reactant combine in one product, the reaction is__________
Combination reaction.
What are the spectator ions in the following equation?AgNO3(aq) + KCl(aq) —–>AgCl(s) + KNO3(aq)
K+ and NO3 -