Chemical Reactions
What are the names of the energy in a reaction?
Endothermic and Exothermic
What are the two properties and Changes?
Chemical and Physical
What is an exact ph of 7?
Water (H2O)
What is a periodic table?
It is a chart that organizes the elements
What is this an example of?
X+Y=XY
Sythesis
What are the two parts of a reaction?
Reactants and Products
What are some examples of physical propeties?
Color, size, shape, state of matter, etc. Whatever you can see
What does it mean if a ph is lower than 7?
It is acidic
What is the atomic number?
The number of protons in the nucleus
What is this and example of?
XY=X+Y
Decomposition
Is an instant cold pack an example of Endothermic or Exothermic energy in reactions?
Endothermic
Is a change in a substance that results in a different substance a chemical or physical change?
Chemical change
What is the atomic mass?
The number of protons and neutrons in the neucleus
What is this an example of?
X+YA=XA+Y
Single replacement
What is the definition of an Exothermic reaction?
When reactants turn into a product and thermal energy
What is a chemical property?
The ability of a substance to change into a different substance (ex. reactions)
Is baking powder acidic or alkaline?
Alkaline
How to find the number of protons in the nucleus?
It is the same as the atomic number
What is this an example of?
XA+YB=XB+YA
Are hand warmers an example of Endothermic or Exothermic energy in reactions?
Exothermic
What is a physical change?
A change in a substance that does not result in a different substance (ex. painting nails)
Are jucies typicaly acidic or alkaline?
Acidic
The atomic mass minus the atomic number
What are the types of reactions?
Synthesis, Decomposition, Single replacement, and Double replacement