Chemical Equations
What is H2 and O2?
Often associated with fire and explosions, this type of reaction produces CO2 and H2O.
What is combustion?
This equation below is this type of reaction chemical reaction:
H2O2 + heated ----> H2(g) + O2.
What is decomposition?
This property of a molecule is determined by the difference in electronegativity between its atoms and the symmetry of its shape.What is polarity?
What is polarity?
Ionic bonds are formed when electrons are transferred from one atom to another, typically between these two types of elements.
What are metals and nonmetals?
These substances are created from a chemical reaction.
What are products?
A reaction where two or more substances combine to form a single product.
What is synthesis?
The equation shown below is an example of this type of reaction:
CaSO4 + 2K ---> K2SO4 + Ca
What is a single replacement reaction?
Covalent bonds form when atoms do this with their electrons.
What is share?
These starting substances of a chemical equation are found on the left side of the arrow.
What are reactants?
A reaction where a more reactive element changes places with a less reactive element in a compound.
What is single replacement reaction?
The equation shown below is this type of chemical reaction:
2Na + Cl2 ---> 2NaCl
What is a synthesis reaction?
Molecules like water are polar because their shape is bent, and this atom pulls electrons more strongly than hydrogen.
What is oxygen?
This type of bond is found in table salt (NaCl), where sodium donates an electron to chlorine.
What is an ionic bond?
To balance the equation CH4 + O2 -> CO2 + H2O, the coefficient in front of the O2 must be this.
What is two?
A reaction where one substance breaks down into two or more products.
What is decomposition?
The equation shown below is this type of chemical reaction:
CH4 + 2O2 ---> CO2 + 2H2O
What is combustion?
This term describes molecules like carbon dioxide, which have polar bonds but no overall molecular polarity due to their symmetrical shape.
What is nonpolar?
Molecules like water (H₂O) have this type of bond, where electrons are shared between hydrogen and oxygen atoms.
What is a covalent bond?
This law states that mass cannot be created or destroyed in a chemical reaction, making it essential to balance equations.
What is the Law of Conservation of Mass?
This reaction occurs when two elements in different compounds change places with each other to form two new compounds.
What is double replacement?
The equation show below is an example of this type of chemical reaction:
ZnI2 + AlBr3 ---> ZnBr2 + AlI3
What is a double replacement reaction?
This is an example of a polar compound.
What is ___ (varies)?
Ionic compounds generally have high melting points and conduct electricity when dissolved in water, while covalent compounds are often found in this state at room temperature.
What is a liquid or gas?