Chemical Properties
When chemical properties are observed, the kind of _________ __________.
What is ... matter changes.
a _______ _______ begins and ends with the same kind of matter.
What is physical changes.
A life is ______ .
What is God creation?
All compounds have chemical names and many have common names as well. Chemical names use the names of _________.
What is elements
If liquid loses energy, _________ occurs and a solid forms.
What is freezing.
Physical properties can be observed without _______ the kind of ________.
What is ..... changing and matter
A _________ __________ begins with one type of matter and ends with another kind of matter.
What is a chemical change.
A chemical change is also know as a __________ ________.
What is a chemical reaction.
Chemists write equations for chemical changes similar to math equations. A ______ _______ keeps track of which substances are used , and in what ratio.
What is chemical equation.
If a gas loses energy , the particles slow down and can turn into a liquid. This process is called _________.
What is condensation.
List 3 examples of Chemical properties.
What are:
*Ability to burn
*reaction to air (corrosion)
*Change when heated
Adding _____ ______ to a solid may change the solid to a liquid.
What is .. heat energy
Chemical changes produce _____ substances.
What is new .
The chemicals on the LEFT side of the chemical equation are _________.
What are reactants.
The total mass of the reactants ______ the total mass of the products.
What is equals
When some metals react with materials in the air, they _____ or _______.
What is rust or tarnish.
When adding heat energy to a solid , that solid changes into a liquid. This process is called _________. This is a physical change.
What is melting.
What are 5 examples of chemical changes?
* change in color
* change in odor
* energy change
* formation of gas
* formation of precipitate
The chemicals on the RIGHT side of the equation are called ______________
What are products.
Define the law of conservation of mass.
The total mass of the reactants equals the total mass of the products.
The process of rusting or tarnishing is called ________.
What is ... corrosion.
If enough energy is added to a liquid, the liquid may boil and __________ or become a _____
What is evaporate and gas.
A ________________ is a solid formed from the chemical reactions of some solutions.
What is a precipitate.
The reactants and products are made of the same elements, but the elements are rearranged. There are _______ numbers of each atom on both sides of the equation.
What is equal
A chemical reaction does not create new matter instead it forms bonds among ___________ atoms.
What is existing