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
Hoochie [10]
4 years ago
9

What are the components needed in order for an experiment to be valid? Identify these components in the following experiment: A

scientist is testing a new plant food to see if it causes plants to grow faster. The scientist tests two plants with the new plant food, and two plants he grows without plant food.
Chemistry
1 answer:
VMariaS [17]4 years ago
5 0
He is missing a (real) control. Growing two plants without plant food at all doesn't count; in order to see if the new food is better, he must also grow plants with the original food in order to compare it. 

He does have an independent variable. This is the type of plant food. It's independent because he has direct control over it.

He needs to give plants the same conditions besides food: same water (amount), same light exposure, same temperature, etc.

He needs to choose a quantitative way to measure how much the plants grew, like mass or length.
You might be interested in
What resources should the scientist use to research water pollution?
Alla [95]
A scientist needs to check several parameters before coming to a conclusion about the amount of water pollution. The scientists needs to check the amount of dissolved oxygen in the water, temperature of the water, the clarity of the water, the PH level of the water and also the amount of bacteria present in the water. There may be other criteria’s, but the mentioned ones are enough to gauge the amount of pollution in the water. Scientists often takes fish and aquatic plants from the water to be tested to check the amount of pollution indirectly affecting these species.



3 0
4 years ago
Bacon head chicken noob
dangina [55]

Answer:

alright that sounds like a recipe i gota try

5 0
3 years ago
Read 2 more answers
How do higher temperatures influence a chemical change?
Brums [2.3K]
<span>Basically, temperature changes the reaction, which means that it would be a chemical change since it changes the formation of bonds and reactions. </span>
8 0
3 years ago
Read 2 more answers
What type of hybridization (according to valence bond theory) does fe exhibit in the complex ion, [fe(h2o)4(br)2]+? what type of
Jlenok [28]
We have 6 pairs of electrons here and the shape is Octahedral so the correct type of hybridization is:   d²sp³
Check the provided picture

7 0
3 years ago
Why might calcium also be called the calcium of citric acid
Stella [2.4K]
Calcium citrate malate contains the calcium salt of citric acid and malic acid
6 0
3 years ago
Other questions:
  • What are the products in the equation for cellular respiration? A. Oxygen and lactic acid b. Carbon dioxide and water c. Glucose
    6·1 answer
  • How do we separate sugar solution with sand
    11·2 answers
  • Write each number in standard notation
    11·2 answers
  • Temperature for freezing point in°C
    6·2 answers
  • When the temperature of a substance decreases to the substance's freezing point, the substance will begin to change from
    15·1 answer
  • How many sig. figs. are in the following numbers?
    6·1 answer
  • Name one reason life was impossible on early earth
    10·2 answers
  • Mercury (II) oxide decomposes to mercury and oxygen. In the chemical equation below, what is the subscript, x, on the oxygen equ
    6·1 answer
  • Help ASAP please! I don’t understand this at all.
    14·1 answer
  • If 1.00 mole of H2 (g) at STP is compared to 1.00 of He (g) at STP, the volumes of the gases will be found to be
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!