Mixtures
A combination of two or more substances that are not chemically bonded together.
What is a mixture?
A change that results in the formation of a new substance.
What is a chemical change?
Materials made from natural resources through chemical processes.
What are synthetic materials?
Uniform composition.
What is a homogeneous mixture?
Color change, temperature change, gas production, formation of a precipitate
What are indicators of a chemical change?
The molecules on the right of the equation.
A long chain of molecules.
What is a polymer?
Can be separated, non-uniform composition.
What is a heterogeneous mixture?
What are atoms in a chemical reaction?
The reactants and products in a chemical reaction.
Contribute to environmental issues and waste.
What is a challenge associated with synthetic materials?
A mixture where tiny particles are dispersed, but not dissolved such as milk.
What is a colloid?
Mass is neither created nor destroyed.
What is the law of conservation of mass?
4Al + 3O2 > 2Al2O3
2Al2O3
What is the product?
Engineered for strength or flexibility.
Filtering, distilling, using a magnet
Burning wood, rusting iron
15 g of water
3 g of salt
stir the contents
add 8 g of vinegar
Using the law of conservation of matter what will be the mass of the contents in the beaker?
What is 26g?
coffee beans, bacon, bananas, almonds
What are natural materials?