Physical Vs. Chemical
Density, solubility, ductility, odor, stated of matter: physical or chemical property
physical property
Pure substances that are made of more than one element bound together. Water is an example.
Compound
Has a pH that is higher than 7
Base
Has a definite shape and indefinite volume.
Liquid
Small nuclei combine to form larger nuclei. The sun uses this.
Nuclear fusion
Reactivity, flammability, combustibility: physical or chemical property
chemical property
The simplest pure substance. Can be found on the periodic table. Zinc is an example
Elements
Has a pH that is lower than 7
Acid
Has an indefinite shape and indefinite volume.
gas
A chemical reaction that takes in energy from the surroundings
endothermic
Affects the size, shape, and texture of a substance
Physical change
Soil: pure substance or mixture
mixture
Has a sour taste, conducts electricity, corrosive, turns litmus paper red
Acids
Lightening bolt, flames, and northern lights
plasma
A large and unstable nucleus breaks into two nuclei. Power plants use this.
Nuclear Fission
Results in the formation of a new substance
chemical change
All component of the mixture are visible because they do not mix together.
Heterogeneous mixture
Has a slippery feel, bitter taste, is corrosive, turns litmus paper blue.
Bases.
Which state of matter is the only one that is highly compressible?
Gas
Mass cannot be created or destroyed. What law states this?
The law of conservation of mass
The rate at which a chemical substance tends to undergo a chemical reaction
Chemical reactivity
components cannot be distinguished from one another. Air is an example.
homogeneous mixture
When does neutralization occur
An acid and base react
Which phase of matter has a definite shape and definite volume?
solid
a chemical reaction where the substances reacting release energy as heat
exothermic