Unit 1
Which state of matter has the lowest kinetic energy?
Solid
What is the charge and location in the atom of an electron?
negative charge
orbiting the nucleus
Isotopes of an element differ in the number of ______.
Neutrons
What is one physical property of ionic compounds?
high melting point
soluble in water
conductive when dissolved
brittle
What planet is closest to the sun?
Mercury
How many significant digits are in:
0.007005060000
10
Write 0.00990 in scientific notation. You must have correct significant digits.
9.90 x 10-3
What happened to an atom for it to have a charge of -2? (Be speficic)
It gained 2 electrons.
What are electrons doing in metallic bonds?
delocalized
sea of electrons
shared with all surrounding metal atoms
Write one example of a mammal.
It must have: warm blood, bones, hair/fur, live young (not eggs)
What is 1 assumption of Kinetic Molecular Theory?
- Particles are in constant, random motion
- Particles move in a straight line until they hit something
- Particles are not attracted to each other or the container
- The average kinetic energy of particles is only dependent on temerpature
- The volume of the gas particles is negligible to the total volume of the entire gas
Who discovered the first subatomic particle?
Thomson
Magnesium belongs to what family group?
Alkaline earth metals
Draw a particle diagram of an ionic compound.
Crystal lattice structure with alternating cations and anions
What is the heaviest organ of the human body?
Skin
What is the name of the law described by the following equation:
P1/T1 = P2/T2
Lussac's Law
Which of the following types of electromagnetic radiation has the largest frequency?
infrared, microwave, x-ray
x ray
Write the noble gas electron configuration for Cl1+
[Ne] 3s2 3p4
Write the formula for iron (II) nitride
Fe3N2
What rock type is formed when lava cools?
Igneous
What is the volume of gas (in mL) if 3.00 moles of gas are at STP? Your answer must have correct significant digits and a unit.
67,200 mL
The energy of a wave is 3.00 x 10-9 J. What is the wavelength of the light in nanometers (nm)?
663 nm
How does ionization energy change from left to right across a period and why?
Ionization energy increases from left to right across a period because of increasing effective nuclear charge (Zeff)
Write the formula and name for the compound formed between hydrogen and sulfate.
H2SO4
sulfuric acid
What is the process of a solid turning into a gas called?
Sublimation