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Science Experiments

Experiments often conducted by students to test different scientific theories and hypotheses

11,111 Questions

What can you use to make an volcanic eruption besides baking soda and vinegar?

You can simulate a volcanic eruption using ingredients like mentos and diet soda, diet coke and candy mints, or hydrogen peroxide and yeast. These combinations create a reaction that results in a foamy eruption similar to a volcano.

How did plants start to grow on Earth?

Plants evolved from aquatic green algae around 500 million years ago. They adapted to living on land by developing structures like roots, stems, and leaves to access nutrients and water, and eventually diversified and spread across the planet through the process of photosynthesis.

Is it better to use a P-200 or P-1000 to pipet 100 microliters?

It is better to use a P-1000 pipette for 100 microliters as it has a higher precision and accuracy at that volume compared to a P-200 pipette. Using a P-1000 will minimize errors and ensure more reliable results.

What would happen if you put your hand in a cloud?

If you put your hand in a cloud, you wouldn't feel anything physical because a cloud is made of tiny water droplets or ice crystals floating in the air. Your hand would pass through the cloud without any resistance.

Can Coca-Cola dissolve chicken?

No... Coca-Cola cannot dissolve Chicken Gizzards or Chicken Breasts.

For our science experiment, we cut chicken gizzards and chicken breasts and in separate, sealing containers, we covered them fully with Coca Cola. One month later, the chicken had not dissolved.

Why was the universe not lifeless?

For three reasons.

One, when the universe was born, it had so much energy at the "big bang" that its levels reached near-infinite, and therefore somehow spontaneously created matter. It then went from infinite to five trillion trillion trillion trillion trillion degrees. This cooling allowed matter to exist instead of being incinerated immediately.

Two, something called "cosmic inflation" happened. This is something that science has not yet fully come to grasp with, and probably never will, but the universe increased in size 20 trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion trillion times.

Three, we won the first war ever. There was a war between matter (us) and antimatter (them) and we won. This is not logical, because for every matter particle there is antimatter, but the universe was in such chaos such simple rules had not been developed.

What is the half life of DDT?

The half life of organic compounds is not like the half life of radioactive materials. It is variable due to the impacts of water, light, temperature and the chemical reactivity of the soil. In the case of DDT (in soil) it can range between three weeks and 30 years.

How can iron be demagnetized?

an iron can be demagnetised by ;-hammering it while facing east _west direction

-hitting it hard on the ground

-connecting it into an ac current while facing the east _west direction .

Why is horse hair stronger than human hair?

Horse hair is stronger than human hair because it has a denser and thicker structure, with a larger diameter and more complex composition of proteins. These structural differences give horse hair greater strength and durability compared to human hair. Additionally, horse hair is designed to withstand external elements and provide protection for the animal, which also contributes to its strength.

Explained why fungi and Bacillus sometimes grow better after heat treatment?

Fungi and Bacillus are capable of producing endospores. The endospores provide a great "niche" for microbes to chill until conditions are optimal. However, sometimes heat activates these endospores. Meaning, the Bacillus is able to divide and replicate after heat because the heat activated the endospore.

Why is the Kirby Bauer test not a good indication of how a drug will perform?

The Kirby Bauer test only provides information on whether a bacteria is resistant or susceptible to a specific antibiotic based on zone diameters, which can vary depending on factors like inoculum size and diffusion rate. It does not provide quantitative information on the minimum inhibitory concentration (MIC), which is a better indicator of drug efficacy. Additionally, the Kirby Bauer test does not account for other factors that can affect antibiotic effectiveness, such as host factors or biofilm formation.

What is an ecological barrier?

An ecological barrier is a natural or human-made feature that restricts the movement of organisms across a landscape, such as mountains, rivers, roads, or urban areas. These barriers can hinder gene flow, change habitat connectivity, and impact the distribution and diversity of species within an ecosystem.

What are 3 elements that compose an atom?

In the context of your question, the answer is: electron, proton, and neutron. Protons and neutrons make up the nucleus, and electrons 'orbit' the nucleus.

Modern subatomic theory is much more complex, although the simple view above is still of significant value, particularly in the electronic theory of chemistry. See "Atom" in Wikipedia for more.

What is a common mineral that breaks with rough or jagged edes?

Quartz is a common mineral that breaks with rough or jagged edges. This is due to its brittle nature and the way its atomic structure breaks along planes of weakness when subjected to stress.

What is a cone-shaped mountain that is built from layers of lava?

A cone shaped mountain that is built from layers of lava is called a volcano.

However, that description does not quite fit any of the three accepted descriptions of the world's volcanoes.

A dome shaped mountain built from layers of lavais called a 'shield volcano'.

A cone shaped mountain built from layers of cinders (tephra) is called a 'cinder cone' or a 'cinder cone volcano'.

A cone shaped mountain built from alternating layers of lava and cinders is called a 'composite volcano'.

What is the dominant trait when a red-eyed fly mates with a blue-eyed fly resulting in offspring that all have red eyes?

A dominant trait, when present, is always expressed. So if the offspring of a red eyed and blue eyed mating are all red, then red must be dominant because it is the trait expressed.

What are three inexhaustible resources?

Three examples of inexhaustible resources are solar energy, wind energy, and geothermal energy. These resources can be harnessed continuously without running out, making them sustainable options for energy production.

How does the amount of water in a gel affect its flexibility?

The amount of water in a gel affects its flexibility by influencing the intermolecular interactions within the gel network. Higher water content can increase the spacing between polymer chains, making the gel more flexible. Conversely, lower water content can lead to stronger intermolecular interactions and a stiffer gel.

It can change into a water spout?

A water spout is a type of tornado that forms over water. It happens when a tornado crosses over a body of water and starts pulling up water into the air. The spinning motion of the tornado creates a funnel-shaped cloud with water droplets.

The process of water soaking into soil is known as?

The process of water soaking into soil is known as infiltration. This is the movement of water from the surface into the soil or porous materials.

What is the texture of slate?

Slate has a smooth, fine-grained texture with a slightly rough surface due to its layered composition. It is typically dense and resistant to scratching, making it a popular choice for flooring and roofing materials.

What science experiment can you do with a California Blackworm?

You can study the behavior of California blackworms in response to different stimuli like light, temperature, or chemicals. Additionally, you can explore their regenerative abilities by cutting them and observing how they regenerate. Another experiment could involve studying their movement patterns in response to varying environmental conditions.

If you have 14 grams of N2 how much NH3 can you make?

First you have to balance the equation

N2 + H2 ---> NH3

N2 +3H2 ---> 2NH3

Then you have to use the Molecular Weight and number of mols required for complete reaction of each one to go from 14g N2 + xg of H2 to get the final result.

What is the difference between Hygroscopic and hydrophilic component?

Hygroscopic components absorb moisture from the air, while hydrophilic components have an affinity for water and can interact with it. Hygroscopic materials can actively draw in moisture, while hydrophilic materials can dissolve, disperse, or swell in water. Both types of components are important in various industries, such as pharmaceuticals and cosmetics.

List five parts of all cells and their jobs?

cell wall-surrounds the cell membrane chloroplasts-uses the energy in the sunlight to turn water and carbon dioxide into oxygen and sugar mitochondria-cell's power producers cytoplasm-material of the cell between the cell membrane and the nucleus vacuoles-sometimes act like a stomach, storing and breaking down material