Atoms + Periodic Table Flashcards
What colour are the non-metals in this periodic table?
Yellow
What type of element is described below?
- Conducts heat
- Conducts electricity
- Is malleable
- Is ductile
- Is shiny
Metals
Is hydrogen a metal, metalloid, or non-metal?
Even though it’s on the left side of the table, it is actually a non-metal. It is a gas at room temperature.
Who’s atomic model is this?
JJ Thompson’s. He discovered electrons, and thought they were like blueberries in a muffin - randomly spread out in a positive dough.
What charges do electrons, protons and neutrons carry?
electrons have a negative charge
protons have a positive charge
neutrons have no charge
What are the 3 subatomic particles?
Electrons, Protons and Neutrons
Multiple Choice:
What makes up the mass of an atom?
- electrons + protons
- electrons + neutrons
- protons + neutrons
Protons and neutrons
What are the symbols for neutrons, protons and electrons?
P+
E-
N*
What does the atomic number represent?
The amount of protons
What are the 3 types of radiation?
- electronic, gamma, and zeta radiation.
- alpha, beta, and zeta radiation
- gamma, beta, and alpha radiation
- gamma, beta, and alpha
Which subatomic particle do isotopes usually have more of?
Neutrons
Which element is this?
Oxygen, because it has 6 valence electrons. It has a total of 8 electrons, so it would also have 8 protons.
Who thought the atom was like a solid sphere?
Dalton thought the atom was solide like a bowling ball.
What were Rutherford’s 3 discoveries from the gold foil experiment?
- Atom is made of mostly empty space
- There is a small, dense nucleus
- The nucleus has a positive charge
Which subatomic particle is very small and practically weightless?
Electrons
Which family is non-reactive?
Noble gases
Which family has elements with only one valence electron?
Alkali Metals
What are valence electrons more likely to do?
Because valence electrons are further from the nucleus, they are more likely to leave the atom and react with other atoms. They have a weak attachment to the nucleus.
Lithium normally has a mass of 7. Sometimes it has a mass of 6 and sometimes it has a mass of 8. What is different about the isotopes Lithium-6 and Lithium-8?
They have different masses because they have a different number of neutrons.
Lithium-6 has one less neutrons.
Lithium-8 has one more neutron.
These are isotopes.
Which element is this?
Neon. It has a full outer shell. It has 10 protons.
List three advantages of using radioactive isotopes.
- Can be used for Nuclear Energy, which produces less CO2 gas emmissions (less pollution)
- Can be used in medicine for treating cancer (radiation) and x-rays.
- Can save lives due to less pollution-related diseases.
List 3 disadvantages of using radioactive isotopes.
- Nuclear disasters can damage living things because of radioactive decay. Many people and living creatures could become sick and die.
- Nuclear weapons. Extremely destructive and dangerous both short-term and long-term.
- Nuclear waste is radioactive, so it needs to be stored in a very special way, often underground, for hundreds of years.
