Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
scientific notation
|
number written as a product of a number between 1.00 and 9.99 and 10 raised to a power
3527=3.527x10 3 .3452=3.425x10 -1 |
|
Multiplying in scientific notation
|
add exponents and multiply numbers
(3.4x10 to 2)(1.2x10 to 7)= (3.4x1.2)(10 to 2+7)= 4.08x10 to 9 |
|
Dividing in scientific notation
|
subtract exponents and divide numbers
(1.7x10 to 8)/(4.7x10 to 3)=1.7/4.7 (10 to 8-3) |
|
Addition and subtraction in scientific notation
|
exponents don't change
|
|
Accuracy
|
reflection of how near the actual measurement is
|
|
precision
|
reflection of how close multiple measurements are to one another
|
|
density
|
mass of object in relation to volume. grams/milliliter. Objects float if less dense than liquid or air
|
|
mole
|
quantity of a substance 6.02x10 to 23 representative particles of a substance (atoms, molecules) Avogadros number.
|
|
Molar mass
|
mass in grams of a substance
|
|
matter
|
anything that takes up space and has mass
|
|
mass
|
quantity of matter an object has
|
|
elements
|
substances that can't be broken down into simpler types of matter. Arranged specifically on periodic table
|
|
atom
|
smallest part of an element still retains element's properties
|
|
atom structure
|
nucleus (central core) with protons (+ charge has same number in any atom of same element) and neutrons (neutral charge)
|
|
atomic #
|
number of protons in nucleus of element, orders periodic table
|
|
electron
|
negative charge, usually equal number of electrons and protons for overall charge of zero and orbit nucleus in energy levels that each hold a limited # of electrons (# of levels varies by element) Atom isn't stable unless outermost energy level is full so atoms combine with other elements and form molecules
|