Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

answer: at room temperature (roughly 20 degrees c), you can dissolve 203.9 grams (or 200 grams) of sugar in 100 ml of water. as water temperature increases, the amount of sugar that will dissolve increases, up to about 500 grams of sugar in 100 ml water at 100 degrees c.

explanation:

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.

1) elements in the same group have the same number of valence electrons.

for example halogens have 7 valence electrons.

group 17 (halogens) elements are: fluorine (f), chlorine (cl), bromine (br) and iodine (i). they are very reactive and easily form many compounds.

2) elements in the same period have the same number of electron shells.

for example all elements in period 2 have two electron shells.

3) metallic elements become less reactive as you move left to right in a period.

for example, magnesium (right) is less reactive than sodium (left).

4) metallic elements become more reactive as you move top to bottom in a group.

for example, potassium (down in group 1) is more reactive than sodium (up in group 1).