Prefixes
How many grams are in a kilogram?
1000
d = ?
m/v
What is the Law of Conservation of Mass?
Matter is neither created nor destroyed; they may only rearrange
Which element does this chemical symbol represent: N?
nitrogen
What is the term for a vertical column in the periodic table?
group
How many milligrams are in a gram?
1000
How do you convert Celsius to Fahrenheit?
°F = 9/5(°C) + 32
What does the Law of Multiple Proportions say?
If elements form multiple products, they combine in small, whole numbers
Which element does this chemical symbol represent: Ca?
calcium
What numbers are displayed on the periodic table?
top number: atomic symbol, number of protons
bottom number: average atomic mass, the average mass of various isotopes of that element
How many micrograms are in a gram?
1 x 106
How do you convert Celsius to Kelvin?
K = °C + 273.15
What does the Law of Constant Composition say?
Pure compounds contain elements in fixed ratios, regardless of sample size. Chemical compounds do not depend on source or preparation method.
Which element does this chemical symbol represent: He?
helium
What are the names of the periods at the very bottom of the periodic table that are separate from the rest?
first of the periods: Lanthanides
last period: Actinides
How many nanograms are in a gram?
1 x 109
How do you convert Fahrenheit to Celsius?
°C = 5/9(°F - 32)
What discovery was made that proved part of Dalton's atomic theory incorrect?
It was discovered that atoms could be broken down further into subatomic particles: negatively-charged electrons and radioactive particles.
Which element does this chemical symbol represent: Zn?
Which three categories can the periodic table's elements be separated into?
metals, nonmetals, metalloids
1 x 106
Multiplication/division: same significant digits as least precise starting measurement
Addition/subtraction: round to last decimal place of least precise starting measurement
What are the four parts of Dalton's atomic theory?
1. Each element is composed of extremely small particles called atoms.
2. All atoms of a given element are identical, but atoms of one element are different from atoms of different elements.
3. Atoms of an element cannot be changed into atoms of a different element by chemical reactions.
4. Compounds are formed when atoms of more than one element combine; a given compound always have the same relative number and kinds of atoms.
Which element does this chemical symbol represent: Ag?
silver
What are four notable groups on the periodic table?
Alkali Metals, Alkali Earth Metals, Halogens, Noble Gases