What’s the matter with you
Anything that has a mass and takes up space
What is matter?
How many sig figs does the following measurement have: 4,007 ml
4
Subatomic particles that make up most of mass of an atom.
Protons and neutrons
S orbitals maximum number of electrons
2
Extensive properties depend on the _______ of matter. (amount or size)
Amount of matter
The 3 states of matter
Solid, liquid, gas
Are the following measurements more ACCURATE or PRECISE when compared to the measurement of 100.0 degrees. Measurements: 77.4, 77.3, 77.1 degrees
PRECISE.
Describe the Lewis Dot structure for magnesium.
The symbol Mg with 2 dots around it.
The current model of the atom
Quantum Mechanical Model or electron cloud model
Burning paper (physical or chemical change)
Chemical change
MISMATCH!!! Is the atomic number located above or below the element's symbol on the periodic table?
Above the symbol.
He used the gold foil experiment to show that the atom is mostly empty space with a tiny, dense, positively-charged nucleus.
Rutherford
The distance between two crests called?
What is a Wavelength
Carbon dioxide turn to a gas at -78.5 degrees (physical or chemical property)
Physical property
The difference between elements and compounds
2 or more elements make up a compound.
How many sig figs does the following measurement have: 0.9800460
7 (the zero on the right counts because there's a decimal!)
The number of electron, protons and neutrons of aluminum, Al.
13 e, 13 p, 14 n
Name all 3 rules for electron configurations and orbital diagrams.
Aufbau principle, Pauli exclusion principle, Hund's rule
Mixing oil and water (chemical or physical change)
Physical change
What is the formula for % error?
(|experimental - actual| / actual) x 100
This early model of the atom developed by Thomson involved a lump of positive charge with electrons stuck to.
Plum-Pudding Model
The electron configuration of a carbon (C)
1s^2 2s^2 2p^2 Carbon has 6 electrons!
The carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas but its mass does not change. The law described here is ___________.
The law of conservation of mass