Atoms
Which is heavier: a neutron or an electron?
Neutron
The substance that dissolves something else. (doing the dissolving)
Which is more accurate: a digital or a non-digital scale?
Digital
Is this electron configuration or an orbital diagram?
1s^2 2s^2 2p^4 3s^2
Electron Configuration
Which block(s) contain the "representative elements"?
The S&P Blocks
True or false: An element can have multiple different kinds of isotopes
True
What is the type of matter called that has definite, uniform characteristics and cannot be separated by physical means?
A pure substance
What is the formula for calculating percent error?
(Experimental-Accepted)/Accepted*100
What is an orbital?
A pathway in an energy level
As you go right across a period, does atomic radius get bigger or smaller and why?
Smaller, because a bigger nucleus means that the pull on the electrons actually causes the atoms to be smaller rather than bigger
What unit is atomic mass measured in?
Atomic Mass Units.
duh.
Milk, Asphalt, and Paint are all examples of what deceptive homogenous mixture?
Colloids
What is the difference between a precise measurement and an accurate one?
Precision needs several measurements (how close they are to each other), while accuracy only needs 1 (how close to goal).
What shape is the d-orbital?
Cloverleaf
What is the name for the energy required to remove an electron from a neutral atom?
Ionization Energy
Which atomic model is most commonly used today?
The Bohr Model
What does the Law of Definite Proportions state?
A certain compound of elements is always composed in the same proportions by mass.
How many significant figures are in the following number?
270000000000
2
When does an atom emit a photon?
When it is returning to its ground state.
Which scientist decided to arrange the Periodic Table by atomic number, not mass?
Henry Moseley
What type of radiation is implied by this symbol?
β
Beta radiation
Who wrote the Law of Conservation of Mass?
Antoine Lavoisier
What is a meniscus? (In terms of volume)
The curve that is formed on the surface of a liquid when it is in a container.
Which row is ignored when naming s,p,d, and f blocks?
Row 15
What does the Periodic Law state?
When elements are arranged in order of increasing atomic number, elements with similar properties appear at regular intervals.