spiral 3 quest science

Question 1

what’s a physical change

Answer 1

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)

Question 2

what’s a chemical change

Answer 2

New Color appears

Heat/Light produced (hot) or absorbed (cold).

Bubbles of gas

Difficult to reverse

Question 3

Where are the reactants and products?

Answer 3

Reactants= Products
H₂+ O₂ = H₂O

Question 4

what’s a Cations

Answer 4

Lose electrons and have a positive net charge.

Question 5

what’s a Anions

Answer 5

Gain electrons and have a negative net charge.

Question 6

What’s the difference between a regular Bohr-rutherford diagram for an element or ion?

Answer 6

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.

Question 7

Reactivity of metals vs nonmetals in periods

Answer 7

Reactivity of metals increases from right to left. Reactivity of nonmetals increases from left to right.

Question 8

Reactivity of metals vs nonmetals in groups

Answer 8

Reactivity of metals increases from the top to the bottom. Reactivity of nonmetals increases from the bottom to the top.

Question 9

what happens if there is more shells

Answer 9

more prone it is to losing electrons.

Question 10

what’s a Climate

Answer 10

The pattern of weather over a long period of time

Question 11

what’s a Weather

Answer 11

The current condition of the atmosphere

Question 12

what’s the Greenhouse effect

Answer 12

how these gasses trap the sun’s energy to keep the planet warm.

Question 13

5 greenhouse gasses:

Answer 13

Water Vapor (H₂O)
Carbon dioxide (CO₂)
Methane (CH₄)
Nitrous Oxide (N₂O)
Ozone (O₃)

Question 14

3 impacts of climate change

Answer 14

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.

Question 15

Tolerance Range

Answer 15

a set of abiotic conditions in which a specific species can best survive.

Question 16

Optimal Range

Answer 16

the best range of abiotic factors that allow the population to thrive.

Question 17

what’s Green carbon

Answer 17

the naturally occurring carbon that exists in our atmosphere and as part as our carbon cycle.

Question 18

what’s Fossil carbon

Answer 18

The added carbon that comes from humans burning fossil fuels and adds to the increasing levels of carbon in the atmosphere

Question 19

How do we know CO2 levels are increasing?

Answer 19

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.

Question 20

How do we know that global temperature is increasing?

Answer 20

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