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Science Experiments

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

11,111 Questions

Why does vomit have acid in it what is the acid?

The acid in vomit is typically stomach acid, which is composed of hydrochloric acid. Stomach acid helps break down food and kill bacteria in the stomach. When someone vomits, the stomach contents are brought up, including the acid.

What does a electron dot diagram tell you about a element?

It indicates the number of valence electrons, and atoms must bond in certain ways to fulfill the Octet Rule. If the electronegativities of two elements are known, the type of bond that will form is also known (ionic, polar, nonpolar) and this information can be crossed with the dot diagram to tell in what ratio exactly the two elements will bond to form compounds.

What is the organization of the subatomic particles in an atom?

An atom is composed of a nucleus containing protons and neutrons, surrounded by a cloud of electrons. The protons have a positive charge, neutrons are neutral, and electrons carry a negative charge. The protons and neutrons are tightly packed in the nucleus, while the electrons move around the nucleus in electron shells or energy levels.

What changes more rapidly with height pressure or density?

Pressure changes more rapidly with height compared to density. This is because pressure decreases exponentially with height due to the decrease in the weight of air above, while density decreases more gradually with height as a result of the decreasing number of air molecules.

Is there a hidden land in the center of the earth?

There is no scientific evidence to support the existence of a hidden land in the center of the Earth. The Earth's core is composed of molten iron and nickel, making it impossible for a habitable landmass to exist there.

What happens if a potato slice is placed in tap water?

If a potato slice is placed in tap water, the potato will absorb water through the process of osmosis. This causes the potato cells to swell and the slice to increase in size. The potato slice may also become softer due to the increased water content.

What new chemical forms when a metal is burned?

When a metal is burned, it can form metal oxides by reacting with oxygen in the air. For example, when iron is burned, it forms iron oxide (rust).

What happens to the plant exposed to the sunlight?

The sunlight is needed for photosynthesis. The plant takes in carbon dioxide and water, and the sunlight causes a reaction where sugar is made. The plant does not need the oxygen, so it "breathes" it out. The sugar is used by the plant as food.

What wind speed causes window glass to break?

Window glass can break at wind speeds as low as 30-45 mph. The exact wind speed depends on factors like the size of the window, the quality and thickness of the glass, and the structural integrity of the building. High wind speeds can create pressure imbalances that can cause windows to break.

Can photosynthesis occur under water?

Yes! Because water is used to make glucose (by photosynthesis) a shortage of water could and would directly affect the process of photosynthesis. When there is no water, the guard cells close the stomata in order to conserve water, this action shuts of the plants supply of carbon dioxide, slowing the rate of photosynthesis, and if not given water the plant will run out of simple sugars and starch and die.

When does magma form?

Magma forms when rocks in the Earth's mantle melt due to high temperature and pressure. This typically occurs at depths of 50-200 km beneath the Earth's surface.

Which of the types of molecules in the table contain carbon?

anything that falls under the category "organic".

they're too many to list here but the most common would be:

saccharide (sugar)

hydrocarbon (petroleum/methane etc.)

How do you separate cornstarch salt and rocks?

To separate cornstarch, salt, and rocks, you can first mix them with water to create a suspension. The cornstarch will settle at the bottom, while the salt will dissolve in the water. Then, you can use filtration to separate the rocks from the mixture. Finally, you can evaporate the water to retrieve the salt.

What is the process of a solid becoming a liquid?

When a solid transitions to a liquid, it undergoes the process of melting. This occurs when the solid is heated to its melting point, causing the particles to gain enough energy to break free from their fixed positions and move more freely, resulting in the solid structure turning into a liquid state.

Inexhaustible natural resources?

· Wind, solar and hydroelectric power provide energy from sunlight, air movement and evaporation (in the form of water that rises from the ocean, falls on the land, enters rivers and subsequently passes through the turbines in dams). These processes will continue as long as there is weather on planet Earth, meaning that energy can be gained from them forever. Energy that is gained from geothermal technology is also effectively inexhaustible, because it uses the warmth of the planetary core. Inexhaustible energy sources differ from renewable energy sources because they won't be used up under any conditions.

What is the factor that changes in an experiment because of the manipulated variable?

REMEMBER:ReaDY MIX.....it helps me every time... MIX stands for Manipulated Independent X-axis......so the answer would be:Independent....hope this helps!:D

Actually since the manipulated variable is independent the the factor that would change would be the responding variable which is the dependent variable so the answer would be:

Dependent or Responding Variable

What are the magnifications on the objective lenses?

There are many different microscopes currently on the market. Most of these microscopes come with different levels of magnification so that you can view an object in different ways. It is important to make sure the microscope you choose to use will have the correct maginfication you need.

What isigneous rock at the earth's surface that is weathered and wears away?

Igneous rock at the Earth's surface that is weathered and wears away is called sediment. Sediment is made up of small pieces of rock that break off and erode from the original igneous rock due to weathering processes like wind, water, and temperature changes.

Why did my plant die when I fed it Ribena which is supposed to be good for plants?

Ribena is not a suitable plant fertilizer as it contains sugar and other additives that can harm plants. The high sugar content can encourage the growth of harmful bacteria and mold in the soil, leading to plant deterioration. It's best to use commercial plant fertilizers specifically formulated to meet the nutritional needs of plants.

What kind of mixture is rice and mango?

Rice and mango together can be considered a complementary mixture, as they provide a balance of flavors and textures. The soft, sweet mango contrasts with the savory rice, creating a delicious blend of taste sensations.