spiral 3 quest science Flashcards
what’s a physical change
Change of form or shape. (ripping paper, shaping clay)
Change of state.
(Solid, liquid, gas)
Dissolving.
(dissolving sugar can be reverse if it’s boiled)
what’s a chemical change
New Color appears
Heat/Light produced (hot) or absorbed (cold).
Bubbles of gas
Difficult to reverse
Where are the reactants and products?
Reactants= Products
H₂+ O₂ = H₂O
what’s a Cations
Lose electrons and have a positive net charge.
what’s a Anions
Gain electrons and have a negative net charge.
What’s the difference between a regular Bohr-rutherford diagram for an element or ion?
For ions, you need to add the brackets outside the bohr-rutherford diagram and the net charge at the top of the brackets. You also need to remove or add any necessary electrons to stabilize the element.
Reactivity of metals vs nonmetals in periods
Reactivity of metals increases from right to left. Reactivity of nonmetals increases from left to right.
Reactivity of metals vs nonmetals in groups
Reactivity of metals increases from the top to the bottom. Reactivity of nonmetals increases from the bottom to the top.
what happens if there is more shells
more prone it is to losing electrons.
what’s a Climate
The pattern of weather over a long period of time
what’s a Weather
The current condition of the atmosphere
what’s the Greenhouse effect
how these gasses trap the sun’s energy to keep the planet warm.
5 greenhouse gasses:
Water Vapor (H₂O)
Carbon dioxide (CO₂)
Methane (CH₄)
Nitrous Oxide (N₂O)
Ozone (O₃)
3 impacts of climate change
Increase in frequency and intensity of natural disasters
Rising temperatures = warmer seas = more water vapor in the atmosphere = more hurricanes, typhoons and torrential rain and
more droughts.
Declining crop yields
If the temperature and amount of available water is outside of a plant’s tolerance range, the plant will not be able to survive.
Declining biodiversity
On land, animals and plants have had to move to higher elevations thus competing with organisms that already exist there. In the ocean, there has been an increased risk of loss of marine and coastal ecosystems.
Tolerance Range
a set of abiotic conditions in which a specific species can best survive.
Optimal Range
the best range of abiotic factors that allow the population to thrive.
what’s Green carbon
the naturally occurring carbon that exists in our atmosphere and as part as our carbon cycle.
what’s Fossil carbon
The added carbon that comes from humans burning fossil fuels and adds to the increasing levels of carbon in the atmosphere
How do we know CO2 levels are increasing?
We can drill large cylinders of ice called “ice cores”. Air bubbles are trapped inside these ice cores which can show us what the atmosphere was like 800,000 years ago. CO₂ levels have drastically increased in the past 80 years.
How do we know that global temperature is increasing?
Viewing patterns over decades, we measure changes in increased temperatures. There are 162 satellites in space monitoring the climate variables.
Sea ice is melting→ Sea levels rise→ Carbon dioxide increases→Global temperature increases
