chemistry unit 1 Flashcards
(28 cards)
whats density
a substance mass per unit volume
whats accuracy
how close a measurement is to the true volume
Luster
a shine or sheen especially from reflected light
Electron
the negative subatomic particle
Meniscus
the curved surface of the liquid in the tube
Independent variable
what the experimenter changes
volume
the amount of space a substance or object occupies
Chemical property
indicates how a substance reacts
MOHS hardness
scale from 1-10 1=graphite 10=diamonds
how close a series of measurements are to each other
Precision
the neutral subatomic particle
Neutrons
the amount of matter in an object
mass
cen be shaped and deformed without breaking
Malleability
observed with the senses
Physical property
the results/outcomes
Dependent variable
the positive subatomic particle
protons
SDS
safety data sheet
What is the formula for calculating density
Density = Mass / Volume
Express the following numbers in scientific notation 4,500,000
4.5 x 10 ^6
Express the following numbers in scientific notation 0.00062
6.2 x 10 ^-4
Express the following numbers in scientific notation 8,940,000,000
8.94 x 10 ^9
Express the following numbers in scientific notation 0.0000000254
2.54 X 10 ^-8
Express the following numbers in scientific notation 36,000
3.6 X 10 ^ 4
Convert the following from scientific notation to standard form:
3.87 x 10-6
.00000387
