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What is Matter
Is anything that has mass and occupies space
Is a type of matter that cannont be broken down into two or more pure substances. There are 115 known elements and 91 occure naturally.
Is a pure substance that contains more than one element. Water is a compound of hydrogren and oxygen. Compounds have fixed compositions. means it contains the same elements in the same percentages by mass.
Contains two or more substances combined in such a way that each substances retains its chemical identity
Name the two types of mixtures
Homogenous / Heterogenous mixtures
Define Homogenous mixture
Also known as a uniform mixtures are ones in which the composition is the same throughout. Another name is Solution. which is made up of a solvent; usually a liquid, but can be liquids, gases or solids ex soda water is a mixture of carbon dioxide (solute) and water (solvent)
a non-uniform mixture are those in which the composition varies throughout. Most rocks fall under this category.
Metric prefixes what are they
- Mega ( 10^6+ ) Kilo ( 10^3 ) [ GRAM ] Deci (10^-1) Centi ( 10^-2 ) Mili ( 10^-3 ) Micro ( 10^-6 ) Nano ( 10^-9) Pico ( 10^-12 )
- ------------------------------ [ LITER ]
- -------------------------------[ METER ]
What is the formulat to convert Celcius to Fahrenheit, Kelvin
Celsius = 1.8(degree celsius) + 32
Fahrenheit to celsius = (degree celsius) - 32 / 1.8
Celsius to kelvin = degree celsius + 273.15 = kelvin / degree of kelvin - 273.15 = Celsius
How do you calculate avg speed
- speed = distance traveled /
- -------- time elasped
Significant figures when dividing and multiplying
The smallest of the significant figures is the one you use.
Whats the symbol for Gold, Magnesium, Silver and Lead?
- gold = Au
- silver = Ag
- magnesium = Mg
- Lead = Pb
Names for symbols Cr, Ca, Fe, Zn
- Cr = Chromium
- Ca = Calcium
- Fe = Iron
- Zn = Zinc