Atom Anatomy
This is a pure substance made of only one kind of atom.
What is an element?
Step one of building a Bohr model is finding this number on the periodic table, which tells you the number of protons.
What is the atomic number?
More electrons than protons gives an atom this kind of charge.
What is negative?
Water leaves a lake as vapor. Name this phase change.
What is evaporation?
These two forces power the movement of water around the Earth.
What are the sun's energy and gravity?
When two or more atoms bond together, this is what forms. x
What is a molecule?
In a neutral atom, the number of electrons equals this.
What is the number of protons?
One mole of lithium, with an atomic weight of 6.94, weighs this many grams.
What is 6.94 grams?
Water vapor in the air forms rain. Name this phase change.
What is condensation?
Rain, snow, sleet, and hail are all forms of this.
What is precipitation?
This subatomic particle has no charge and counts toward mass number only.
What is a neutron?
Lithium's atomic weight is 6.94. Rounded to a whole number, this is its atomic mass.
What is 7?
6.02 × 10²³ is not a weight. It is this.
What is the number of atoms in one mole?
Falling raindrops become hail. Name this phase change.
What is freezing?
Rainwater soaking from the surface into the ground is called this.
What is infiltration?
This is where electrons are most likely to be found, a better description than the orbits drawn in Bohr models.
What is the electron cloud?
Boron has an atomic number of 5 and an atomic weight of 10.81. This is how many neutrons it has.
What is 6? (Atomic mass 11 − 5 protons)
A sodium ion has 11 protons, 12 neutrons, and 10 electrons. Give its mass number and net charge.
What is a mass number of 23 and a net charge of +1?
Snow on a mountain ice cap becomes water vapor, skipping the liquid stage. Name this phase change.
What is sublimation?
Surface runoff cannot get its water from this underground source.
What are aquifers?
The nucleus is dense and has this charge because of the particles it holds. Name the charge and the charged particle.
What is positive, because the nucleus holds protons?
A neutral lithium atom has 3 electrons. Describe how they are arranged in the shells.
What is 2 in the first shell and 1 in the second?
An atom has 8 protons, 8 neutrons, and 10 electrons. Name the element and give its charge.
What is oxygen with a charge of −2?
Water vapor turns straight into frost, skipping the liquid stage. Name this phase change and what phases it starts and ends as.
What is deposition, from gas to solid?
Glacier water flowing down a mountainside is this phase change. Say what phases it starts and ends as.
What is melting, from solid to liquid?