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Who was the first scientist whose alpha particle scatterring experiment led him to conclude that the the nucleus of an atom contains a dense center of positive charge is?
Wiki User
∙ 6y ago
The experiments were being done by Ernest Marsden, and Hans Geiger, under the supervision of Ernest Rutherford.
Wiki User
∙ 6y ago
Wiki User
∙ 12y agoRutherford
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In the germinating seed experiment what do you call the tube that contains only glass beads?
thermobarometer
Experiment for Science Fair 1 jar contains vinegar and water and 1 jar contains baking soda and vinegar. How much water should be added to vinegar for creating the greenhouse effect?
About a teaspoon.
What simple experiment can be used to determine if a liquid compound contains polar molecules?
Thin Layer Chromatography (TLC) procedure can be used
Why do you use a discharge tube to perform the experiment instead a of light bulb?
It depends on the experiment, of course, but a discharge tube contains ionized atoms, while an incandescent simply has glowing metal. The former is, for most experiments, a lot more interesting.
What is significant about Ernest Rutherford?
Rutherford came up with the basic structure of an atom using his gold foil experiment. He shot alpha particles(hydrogen nuclei) at a peice of gold foil and watched the results. He found from this experiment that the atom contains a dense, positively charged nucleus, negative particles in "electron clouds" and is made up of mostly empty space.
A science researcher is reviewing another scientist's experiment and conclusion the reviewer would most likely consider the experiment invalid if?
it contains conclusions not explained by the evidence given
What scientist concluded the nucleus of an atom contains a dense center of positive charge?
Ernest Rutherford concluded that an atom contains a very small, dense center, called a nucleus, with a positive charge as a result of his gold foil experiment.
Which scientist was the first to conclude through experimentation that atoms have positive charges in their nuclei?
Hans Geiger and Ernest Marsden. Rutherford was the supervisor and explained the unexpected results, so his name is usually attached to the experiment as well, but it was Geiger and Marsden who actually did it.
What is a role of a control group?
In conducting a scientific experiment, a scientist should have a control group and an experiment/treatment group. The scientist proposes a null hypothesis (null because it is intended to be disproven). The scientist then treats the two groups identically except the treatment group receives the treatment and the control group does not. Because the two groups were treated identically except for the treatment, any subsequent differences in the groups is (tentatively) attributed to the treatment. Thus,the control group is the group NOT receiving the treatment. For example, the scientist could propose that "fish will not die if they stop receiving food" (as a null hypothesis). The scientist then places two fish tanks full of similar fish into the same room, so that temperature, air pressure and light are equal. Then the scientist feeds one tank the recommended amount of fish food, while not feeding the other tank at all. After one week of this treatment, the scientist observes the tank receiving food (the control group) contains live fish while the group receiving the treatment (starvation) only contains dead fish. The scientist would then disprove the null hypothesis and conclude (tentatively) that fish do need food to continue living.
What is the part of an experiment called that contains the variable?
The experimental setup
Is an experiment considered a controlled experiment if it contains tests with chemicals?
No, it could be one, but that does not necessarily classify it as controlled. A controlled experiment is an experiment that has only ONE independent variable, and other variables are kept the same.
Which soft drink contains the most fizz experiment How to prove it?
coke
An archaeologist finds a site that contains many layers of artifacts What might he or she conclude about the people who lived at the site?
The archaeologist may conclude that the site was inhabited over a long period of time, possibly indicating a settled and stable community. The presence of different layers of artifacts may suggest changes in the society's technology, culture, or economy over time. Studying the artifacts can provide insights into the daily lives, activities, and beliefs of the people who lived at the site.
What is the purpose of having a control group?
In conducting a scientific experiment, a scientist should have a control group and an experiment/treatment group. The scientist proposes a null hypothesis (null because it is intended to be disproven). The scientist then treats the two groups identically except the treatment group receives the treatment and the control group does not. Because the two groups were treated identically except for the treatment, any subsequent differences in the groups is (tentatively) attributed to the treatment. Thus,the control group is the group NOT receiving the treatment. For example, the scientist could propose that "fish will not die if they stop receiving food" (as a null hypothesis). The scientist then places two fish tanks full of similar fish into the same room, so that temperature, air pressure and light are equal. Then the scientist feeds one tank the recommended amount of fish food, while not feeding the other tank at all. After one week of this treatment, the scientist observes the tank receiving food (the control group) contains live fish while the group receiving the treatment (starvation) only contains dead fish. The scientist would then disprove the null hypothesis and conclude (tentatively) that fish do need food to continue living.
In the germinating seed experiment what do you call the tube that contains only glass beads?
thermobarometer
Why concentrated sulfuric acid and not hydrochloric acid used in this experiment?
because hcl contains cl2
A science researcher is reviewing another scientists experiment and conclusion. the reviewer would most likely consider the experiment invalid if?
it contains conclusions not explained by the evidence given
