Atomic Structure
Matter
Periodic Table
Chemical Bonding
Random
100
What is the nucleus of an atom made of?
protons and neutrons
100
What is the fourth state of matter?
plasma
100
What is the oxidation number of elements in group 7
1-
100
Which two elements make up table salt?
sodium and chlorine
100
What is another name for a positive ion?
cation
200
What are valence electrons?
electrons in the outer energy shell
200
Which state of mater has no definite shape or volume?
gas
200
The halogens make up which group?
group 7
200
What are the three types of chemical bonds?
ionic, covalent, metallic
200
What is ionization energy?
energy required to remove an electron from an atom
300
How many electrons are in the d orbital?
10
300
What is another name for a homogeneous mixture?
solution
300
What is the size of a positive and a negative ion compared to the size of the neutral atom?
positive ions are smaller, negative ions are larger
300
Is potassium chloride a covalent or ionic bond?
ionic
300
What is the electron configuration of sodium?
1s2 2s2 2p6 3s1
400
Which law states that electrons will always fill the lowest energy level first?
Aufbau principle
400
What is an intensive property?
physical property (color, mass, volume, malleability)
400
What makes hydrogen different from the other elements in group 1?
it is a nonmetal
400
What is the formula for magnesium bromide (Mg+2 Br1-)?
MgBr2
400
What are alpha particles made of?
helium atoms
500
Which law states that it is impossible to know the velocity and position of a particle at the same time?
Heisenberg uncertainty principle
500
Which element has the highest melting point?
tungsten
500
Who created the modern periodic table?
Dimitri Mendeleev
500
What is the structure of ionic bonds?
crystal lattice
500
What makes up the electromagnetic spectrum?
radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gamma rays
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