Type of ion formed in a chemical
reaction
Element
Phase at room
temperature
Reactivity
w
Positive
Solid
Highly reactive
Exhibits
х
Does not form ions
Gas
Non-reactive
Y
Negative
Gas
Highly reactive
z
Positive
Liquid
Somewhat reactive
Using your knowledge of periodic properties and trends, how would these elements best be classified and why?
A. Elements W and Z are metals, but Element Z has fewer valence electrons. Elements X and Y are nonmetals, but Element Y is a
halogen

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

You will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. (refer to the walk-through video to locate the online lab within the online textbook).

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.