Matter and Mixtures
The smallest unit or building block for all matter is?
The Atom
What is the first element in the periodic table?
Hydrogen
An atom that has lost electrons and gained overall positive charge is considered a?
Cation
Which type of decay emits a helium and can be stopped by a piece of paper?
Alpha
Which process involves splitting a heavy nucleus into smaller nuclei?
Fission
If you have a gold bar and a glass of salt water, which one is a pure substance
Gold bar
Iron
10
During gamma decay, what is released?
Energy (Y)
Which process requires extremely high temperatures to occur?
Fusion
The air in your room contains nitrogen, oxygen, and other gases, but it looks perfectly clear and consistent throughout. What type of mixture is air
Homogeneous
Which element on the periodic table has an atomic mass of 50.94
Vanadium
Which group of elements are the easiest to become cations since they only have 1 electron to give away?
Group 1
In Beta decay, does the atomic number increase or decrease by one
Increase
Which process is currently used in commercial nuclear power plants to produce electricity
Fission
With states of matter, which one's atoms slide past each other but stay touching?
Liquid
Name two elements that are considered metalloids
B, Si, As, Ge, Te, Sb, and Po
The process in which an atom loses or gains an electron is called?
Ionization
What will Silicon-32 be after one beta emission
Phosphorus-32
Isotopes of hydrogen (tritium and deuterium) are used in this process
Fusion
The Law of Conservation of Matter states.......
Matter cannot be created or destroyed
How many valence electrons does the element Gallium contain?
3
In NaCl, Chlorine takes an electron from Na. Between Na and Cl, identify the cation and anion.
Na= Cation
Cl= Anion
Half-life: If you have 100g of a substance with a 1-day half-life, how much is left after 2 days?
25g
Uranium- 235 or Plutonium- 239