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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?
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∙ 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?
The tube that contains only glass beads is called the control tube. It is used as a control in the germinating seed experiment to provide a baseline comparison for the experimental tube with seeds.
What simple experiment can be used to determine if a liquid compound contains polar molecules?
Thin Layer Chromatography (TLC) procedure can be used
What could you conclude from a sample of natural water which contains a cluster of sphere-shaped bacteria but no rod-shaped or spiral-shaped bacteria as seen under a microscope?
At least two types of bacteria are contained in the natural water sample.
Which of the following is true about the nucleus of an atom?
J.J. Thomson's experiments provided evidence that an atom contains negatively charged particles.
Who is the scientist who suggested that atoms contain a hard core containing most of the mass of an atom?
Ernest Rutherford suggested that atoms contain a dense, positively charged core called the nucleus, which contains most of the mass of an atom. This was based on his gold foil experiment in which he observed the deflection of alpha particles, leading to the proposal of the nuclear model of the atom.
Which scientist was the first to conclude through experimentation that atoms have positive charges in their nuclei?
Ernest Rutherford was the first scientist to conclude, through his gold foil experiment, that atoms have positive charges concentrated in their nuclei. This experiment led to the development of the nuclear model of the atom.
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 the nucleus of an atom contains a dense center of positive charge through his famous gold foil experiment in 1909.
Who was the scientist that showed existence of the nucleus?
Ernest Rutherford was the scientist who demonstrated the existence of the atomic nucleus through his famous gold foil experiment in 1909. He discovered that atoms have a small, dense core at their center that contains positively charged particles which he named protons.
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.
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.
What is the part of an experiment called that contains the variable?
The part of an experiment that contains the variable being tested is called the experimental group. This group is the one where the treatment or manipulation is applied to observe its effects.
Which soft drink contains the most fizz experiment How to prove it?
coke
What is the purpose of having a control group?
The purpose of having a control group in an experiment is to provide a baseline for comparison. By keeping all variables the same except for the one being tested, researchers can determine if changes observed in the experimental group are due to the treatment or intervention being studied.
In a experiment what group contains a variable?
The experimental group contains the variable being studied. This group receives the treatment or manipulation of the variable to observe its effects.
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
In the germinating seed experiment what do you call the tube that contains only glass beads?
The tube that contains only glass beads is called the control tube. It is used as a control in the germinating seed experiment to provide a baseline comparison for the experimental tube with seeds.
