Biology (reproduction)
What is asexual reproduction?
One parent makes one or more identical offspring.
What group number is Nitrogen in?
What subatomic particle does the atomic number refer to? Protons, electrons or neutrons?
The number of protons in the nucleus.
What is an ionic compound?
metal + non-metal
transfer of electrons from metal to non-metal
What is the name of the ionic compound FeN?
Iron Nitride
Name two types of asexual reproduction.
binary fission, spore, budding, clone
What are the elements arranged by in the periodic table?
atomic number, element properties (reactivity, metals, non-metals, gasses, brittle, soft, ductile, etc)
Where are the protons, neutrons, and electrons located in the atom?
protons and neutrons in the nucleus (middle)
electrons are arranged in shells outside the nucleus
What is a covalent compound?
shares electrons
What is the name of the covalent compound SiO4. Hint: Remember your prefixes!
Silicon tetraoxide
What is sexual reproduction?
two parents make one unique offspring through meiosis
to the right of the staircase
1st- 2 electrons
2nd - 8 electrons
3rd - 8 electrons
What is an ion? Provide an example.
A charged element. Ex. Na+ or Cl-
What is the chemical formula for Potassium Phosphide?
K3P
What is genetic variation? Why is it important?
Genetic variation is variation in the DNA sequences of each individual of a species.
It allows individuals to adapt and survive in changing environments.
How many valence electrons are there in group 2?
2 valence electrons (in outer shell)
How do you find the number of neutrons in an atom?
atomic mass - atomic number (# of protons) = # of neutrons
Is H20 an example of an ionic or covalent compound?
covalent. Non-metals only.
What is the chemical formula for diboron pentaiodide.
B2I5
Name two reasons why reproduction is important.
- ensures life exists beyond the current generation
- transfers genetic information from parents to offspring
Which group are the noble gases in? Why do all the other elements want to be like them?
group 18. They have full valence shells so are stable.
How many electrons are in a sodium ion (charged atom)?
10. Sodium has an ionic charge of +1 so it gives away one electron to be stable (one less than proton number of 11)
Is BaBr2 an example of an ionic or covalent compound?
ionic. Metal + non-metal
What is the chemical formula for Copper (II) Carbonate? Hint: This includes a polyatomic ion.
CuCO3