Atmosphere student lab sheet
's atmosphere? how are they
conclusion: what are the layers of the earth's atmospheres
sp
different?
claim: the four main layers of the atmosphere are the
keposphere
stratosphere
and thermosphere
. they are divided into lav
temperature changes, and each higher level,
- mesophere
divided into layers based on
each higher level is less
os than the one below it.
sponge had less density of water
evidence: in the lab, the bottom
molecules, which modeled the air density in the
atmosphere. in the graph,
increased or decreased
at different distances. there were "
" where the
eme temperature continued for several kilometers,
g: as the distance from earth increases, the densi
increases, the density of air
also, as the distance changes, the
changes. as the distance of earth increases density of air molecules

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

Astudent made a graph plotting the progress of a reaction over time. the student forgot to label the y-axis of the graph. a graph is shown with two graph lines. one graph line starts at a higher position on the y axis and slopes downwards towards the right. the other graph line starts at a lower position on the y axis and slopes upwards towards the right. the two graph lines stop short of intersecting each other and continue as separate lines which gradually become straight and parallel to the x axis. a vertical line is shown at a point where the two graph lines finally became parallel to the x axis. this vertical line is labeled equilibrium. the title on the x axis is time and an arrow pointing towards the right is shown above time. the title on the y axis is left blank. what best explains the label that the student should use on the y-axis? amount, because as the amount of product decreases, the amount of reactant increases over time. reaction rate, because forward and backward reaction become equal at equilibrium. amount, because the amounts of reactants and products become constant after equilibrium is reached. reaction rate, as the rate of forward reaction increases and rate of backward reaction decreases over time.