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.
Single replacement, Double replacement, combustion, combination, decomposition
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.
The number of oxygen atoms in the reactants of the equation CH₄ + 2O₂ → CO₂ + 2H₂O.
What is 4
What does this symbol represent in a chemical equation? ----->
Yields or produce
The number of products in the equation NaCl + AgNO₃ → NaNO₃ + AgCl.
What is 2?
This reaction occurs when a compound breaks down into simpler substances.
During a chemical reaction, A. New elements are produced. B.elements are destroyed. C. Atoms are rearranged.
c.
2Na+Cl2 →2NaCl
How many reactants are there?
How many products are there?
How many molecules of NaCl are formed?
How many elements are in the equation?
when two reactant combine in one product, the reaction is__________
Combination reaction.
This reaction requires oxygen and often produces heat and light.
Combustion reaction