Random Ones
The smallest particle of an element that retains its chemical properties is called this.
Atoms
Which particles determine the position of an element in the periodic table?
Protons
Which element has the symbol N?
Nitrogen
Saturn is placed in which order of the Solar System?
6th
The Big Bang started as a dense mass of energy in a shape of a ball, what is that ball called?
a singularity
The horizontal rows on the periodic table are called this.
Periods
Compared to particles in a cold substance, particles in a hot substance have more
kinetic energy
The vertical columns in the periodic table where elements share similar chemical properties are called?
Groups
How many years ago did the Big Bang Start?
about 13.7 billions years ago.
How long is a light year?
About 9.6 tillion kilometers
This type of planet has a solid surface, is closer to the Sun, and includes Mercury, Venus, Earth, and Mars.
Terrestrial Planet
True or False?
Isotopes have the same number of protons, same electrons (if neutral), but different number of neutrons.
True
Nitrogen is period 2, group 5/15. Which element is most similar?
Phosphorus
What happens to a low-mass star like the Sun when it runs out of hydrogen fuel?
It expands into a red giant
Why do space telescopes produce clearer images than telescopes on Earth?
Because light bends through the Earth's atmosphere causing blurring or distortion.
Label 3 types space telescopes used in space.
optical, x-rays, gamma rays, infrared, microwave or ultraviolet
What is meant by the half-life of an isotope of an element?
The time it takes for half the radioactive nuclei of that isotope to decay
An element in period 3, group 16 reacts with hydrogen to form a gas with a strong smell.
Sulfur / Hydrogen sulfide
The force that keeps planets in orbit around the Sun and causes tides on Earth is called this.
Gravity
What does the Cosmic Background Radiation have to do with the Big Bang theory?
It is leftover radiation from the big bang that was spread all over during universe expansion
One the far right of the periodic table what is the last group called?
Explain their property.
Noble Gas, they are inert and cannot react to other elements.
Ernest Rutherford carried out experiments in which a beam of alpha particles was directed at a thin piece of metal foil. From these experiments what did he conclude?
the positively charged parts of atoms are extremely small and extremely heavy particles
This element has atomic number 20. Predict whether it is a metal or non-metal, and explain why it is placed in group 2.
Calcium, metal, 2 valence electrons (group 2)
Earth, Solar System, Unknown 1, Local Group, Unknown 2, Observable Universe.
What is Unknown 1 and Unknown 2?
Milky Way Galaxy and Virgo Super Cluster.
After a supernova two things can happen, in the star lifecycle, what can the supernova become after that?
Neutron Star or a Blackhole