Chemistry, 07.10.2020 01:01 gonsalex6688
Gabriella's teacher suggests that she use a strong solution of vinegar to kill the
Weeds. Vinegar is acidic and prevents plants from maintaining homeostasis.
Gabriella sets up a controlled experiment to test her hypothesis that the solution
will kill the weeds without harming nearby vegetables. She plans to spray one
group of weeds with the solution and another group of weeds with water as a
control
What two variables should Gabriella keep the same between the control group of
weeds and the sprayed weeds to make sure that the spray has had an effect.
1
2.
Answers: 2
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Forests and meadows are often cut down to make way for farms or large number of new homes. what are some of the elements of ecosystems that are lost when plants in these areas are removed?
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Which term refers to a property that depends only on the amount of a substance? ©@
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Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.
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Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o → k + o2 (b) na + i2 → nai (c) cu(no3 )2 + naoh → cu(oh)2 + nano3 (d) kclo3 → kcl + o2 (e) ca(no3 )2 + hbr → cabr2 + hno3 (f) sn(oh)2 → sno + h2 o (g) p4 + n2 o → p4 o6 + n2 (h) fe + al2 (so4 )3 → feso4 + al (i) alcl3 + na2 co3 → al2 (co3 )3 + nacl (j) c3 h6 + o2 → co2 + h2 o
Answers: 1
Gabriella's teacher suggests that she use a strong solution of vinegar to kill the
Weeds. Vinegar i...
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