1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ad-work [718]
3 years ago
6

A student finds a puddle of water in a garden and takes a sample he wants to perform an experiment to determine if they are livi

ng things in the water how can you collect data that would provide evidence of living things
Chemistry
1 answer:
SSSSS [86.1K]3 years ago
7 0

Answer:

We will have to perform this as a practical to show all the evidence of living things.

Explanation:

Student use microscopes to examine water samples collected from puddles, ponds  or creeks. After identifying any living organisms under the microscope, the student estimate

how many living organisms are in their classroom and consider whether those organisms  are large enough to see without a microscope. Students use this information to predict  whether the life forms on their planet are large enough to see without a microscope.

Purpose :

The bulk of the biomass on Earth is microscopic, and for most of Earth’s history  all life was microscopic. This lesson is designed to help student appreciate that life

outside of Earth may be too small to see with the naked eye.

Standards :

A complete list  this lesson and their standards are to be done here,

Procedure :

One to two weeks before this lesson: Have students collect samples of water  from puddles, creeks or ponds. Caution them that if they collect a sample from a pond,

lake or deep stream or creek that they should have an adult with them when they collect  it. Have them bring their sample into school in a sealed jar. When they bring their  samples in, place two or three grains of cooked rice in the jar to provide nutrients for any  microorganisms living in the water.

The jars should be kept sealed and out of direct  sunlight to prevent overheating.

It is a good idea to collect a few samples yourself in case some groups do not have  any samples containing life. Check your samples occasionally under the microscope to  make sure that there are organisms living in the water.

Begin the lesson. Students should get in their groups and begin reading

     Big Life or Tiny? You may want to read the first paragraph aloud and give the groups  time to answer the question. Students should count all the living things that they can see  in the classroom. Answers should be around 30, depending on whether there are any  plants or pets in the classroom.  

The rice was to provide food for anything living in the water.

You might be interested in
What is crystal field splitting?
kvv77 [185]

Answer:

Crystal field splitting is the difference in energy between d orbitals of ligands. Crystal field splitting number is denoted by the capital Greek letter Δ. Crystal field splitting explains the difference in color between two similar metal-ligand complexes.

4 0
3 years ago
Find the mass of 3.00 mol of acetic acid, C2H4O2.
Alexeev081 [22]
Molar mass 

C₂H₄O₂  = 60.0 g/mol

n = mass / molar mass

3.00 = mass / 60.0

m = 3.00 * 60.0

m = 180 g of <span>C₂H₄O₂ 

hope this helps!</span>
5 0
3 years ago
PLZ help Asap!!!!!! I WILL GIVE BRAINLIEST!!!
Sergeu [11.5K]

Answer: Chosen landforms are:

1) Hill

2) Mountain

3) Plateau

4) Valley

Explanation:

1) Hill is an elevated location smaller than a mountain. Location: Land

2) Mountain is a large mass of earth and rock, rising above the common level of the earth or adjacent land, usually given by geographers as above 1000 feet in height (or 304.8 metres).

Location: Land or Water

3) Plateau is a largely level expanse of land at a high elevation. It is also known as tableland.

Location: Land

4) Valley is an elongated depression between hills or mountains, often with a river flowing through it.

Location: Land or Water

6 0
3 years ago
When electrons gain energy, what can they do?
beks73 [17]

B. When electrons gain energy, they have the power to move up to a higher energy level in an atom.

3 0
3 years ago
When the pressure that a gas exerts on a sealed container changes from 1100 bar to 75.5 bar, the temperature changes from k to 2
Serjik [45]
Gay-Lussac's law gives the relationship between pressure and temperature of gas. For a fixed amount of gas, pressure is directly proportional to temperature at constant volume.
P/T = k
where P - pressure , T - temperature and k - constant
\frac{P1}{T1} =  \frac{P2}{T2}
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
substituting the values in the equation 
\frac{1100 bar}{T}  =  \frac{75.5 bar}{298 K}
T = 4342 K
initial temperature was 4342 K
7 0
3 years ago
Other questions:
  • What is the mass of 2.5 mol of ca, which has a molar mass of g/mol
    14·1 answer
  • Wybierz spośród podanych określeń wlaściwości tlenku węgla4 i wpisz je w odpowiednie kolumny tabeli
    5·1 answer
  • What is 1 mole of neon gas
    12·2 answers
  • Find x, y, and z such that x³+y³+z³=k, for each k from 1 to 100.
    10·1 answer
  • Properties of alloy​
    10·2 answers
  • A solution has a pH of 2. Which best describes the solution? A strong acid, a strong base, a neutral solution, a weak base
    12·2 answers
  • What is the formula for the compound iodine trichoride?
    5·1 answer
  • I have to covert 4.4×10^4 Pa in to atm
    6·1 answer
  • A student proposes creating a buffer by dissolving 0.010mol of NaClO4(s) in 100.mL of 0.100MHClO4. Explain why the resulting sol
    14·1 answer
  • A reaction is 50% complete in 2 hours and 75% complete in 4 hours.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!