Atoms, Elements, and compunds
Sustainable ecosystems
Study of the universe
Characteristics of electricity
100
What is the chemical formula for Magnesium fluoride? (K/U)
Mg2F
100
What is after condensation in the water cycle? (K/U)
precipitation is after condensation in the water cycle.
100
What is an astronomer and give and example of what they do? (C)
A scientist who studies astronomy, which is the night sky. An example could be stars.
100
What can and electroscope detect? (T/I)
It can detect the presence of electric charge.
200
If your mass number is 12.01 and your atomic number is 6, what is the number of neutrons? (A)
12.01 - 6 = 6.01 neutrons.
200
Give 3 examples of biotic things and 2 examples of abiotic things. (T/I)
Biotic: Abiotic:
. Flowers . Water.
. Trees . Light
. Grass . Oxygen
200
True or False
Rotation is the time it takes for an object to orbit another. (T/I)
False
200
What is an electric circuit? (C)
A closed path where electrons that are powered by an energy source can flow.
300
Draw a Bohr-Rutherford diagram of carbon. (C)
300
Write the chemical formula for photosynthesis. (A)
6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
300
What is the surface temperature of a star that is the colour blue? (A)
35 000
300
How much electrons does 1 coulomb equal? (K/U)
6.25 x 10^18 electrons.
400
True or False
Solubility is the ability of a substance to from another substance. (T/I)
False
400
Give 2 threats to biodiversity. Give one reason as to why is threats the biodiversity for one of the threats. (C)
Habitat loss and alien species.
Alien species come that are not welcomed will come and kind of take over for the other specie that were living there and take away there food.
400
A massive explosion in which the entire outer portion of a star is blown off.
What am i? (K/U)
Supernova.
400
If you have 6.0 v, how many 1.5 v cells will you have? (A)
you would have 4 cells.