Sapling Learning Ch. 3
b)solid- balls all together settled
c) liquid-balls barely jumping
a) balls jumping around
b) balls all together settled
c) balls barely jumping
b)Element- balls all together
c)Compound- three balls connected
d)Heterogeneous mixture- three types of balls, two types are connected the third type is running around crazy.
a)two types of balls barely moving
b)balls all together
c)three balls connected
d)three types of balls, two types are connected the third type is running around crazy.
Metalloids: Si, Ge
Xe TI Si ln
Ge Ga S
a) They tend to gain electrons when forming ions.
b)They tend to be good conductors.
c)They tend to lose electrons when forming ions.
d)They tend to be brittle.
e)They tend to be ductile.
f)They tend to be poor conductors.
a) magnesium chloride (1 Mg ion, 2 Cl ion)
b) lithium sulfide (2Li ion, 1 Sion)
Chemical: a,c, g,h
a)In the liquid state reacts spontaneously with its glass container, producing a hole in the container.
b)Silvery gray in color.
c)Reacts violently with chlorine to form a white solid.
d)Burns in oxygen with a bright red flame.
e)Light enough to float on water.
f)Can be cut with a sharp knife.
g)Changes from silvery gray to black when placed in moist air.
h)In the liquid state it boils at 1317 degrees Celsius.
B to C: chemical
B to D: physical
D to E: chemical
D to F: physical
A to B: sets of two red and blue balls just floating around not mixing
A to B: same but red and blue sets mixed.
B to C: formed sets of threes where there are two blue and one red in each set.
B to D: chamber is split top half has sets of two and only blue. bottom half has sets of two one blue and one red in each set.
D to E: blue separate out of pairs and move around quickly.
D to F: sets of one red and one blue group together and stay still.
b)Radiant (light)& Thermal (heat)
e)Radiant (light)& Thermal (heat)
a) An electric light bulb is turned on.
b) A log is burned in a fireplace
c) A green plant “grows”
d) A bicycle is pedaled.
e) A flashlight is turned on.
a) Burning 10g of propane produces twice as much carbon dioxide as burning 5g of propane.
b) The C:O mass ratio of one compound is exactly double that of another compound.
c) When 3 g of carbon reacts with 8g of oxygen, 11g of carbon dioxide is produced.
d) The C:O mass ratio of a particular compound is the same, regardless of the size or source of the sample.
In the combustion of hydrogen fas, hydrogen reacts with oxygen from the air to form water vapor.
hydrogen +oxygen —> water
If you burn 56.6g of hydrogen and produce 506g of water, how much oxygen reacted?