Qualitative Analysis of Ion Exchange Capacity 1. Sand‚ Sand and humus‚ Collected sample‚ Sand and clay 2. Crystal Violet and Eosin Y have different charges and soils with a higher capacity hold more colors. 3. The more absorptive samples (sand and humus) have a negative charge while the less absorptive samples have a positive charge. 4. It’s important so the plants have correct nutrients to enable proper growth. 5. I would add clay Activity 3 – Analysis of Free Ions 1. Soil
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on the electrical charge found on the chromogen portion‚ as well as on the cellular component to be stained. There are 2 types of stain: Acidic stains – a chromogen portion exhibits a negative charge‚ therefore has a strong affinity for the positive constituents of the cell Basic stains – a chromogen portion exhibits a positive charge‚ therefore has a strong affinity for the negative constituents of the cell Bacterial cells usually have a negative surface charge‚ meaning that a
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separated‚ or rearranged- but never changed into atoms of another element (TRUE) 10. Models of the atom a. Plum Pudding- electrons float around in a positive charged “pudding” b. Nuclear Model- atom is mostly empty space. All the positive charge and almost all the mass is concentrated in a small area in the center‚ called the nucleus. Nucleus is composed of protons and neutrons c. Planetary- electrons orbit the nucleus like planets d. Quantum-atom is found inside a blurry electron
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(vertical rows in the periodic table). Atoms are the basic building blocks of ordinary matter. Atoms are made up of particles called protons‚ electrons‚ and neutrons. Protons carry a positive electrical charge‚ electrons carry a negative electrical charge‚ and neutrons carry no electrical charge at all. The protons and neutrons come together in the central part of the atom‚ called the nucleus‚ and the electrons ’orbit’ the nucleus in the electron cloud. An element is a substance that is made entirely
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the atom as a positively charged entity that contains randomly dispersed (negative) electrons within it. It is called the plum pudding model because the electrons in the positively charge cloud resemble raisins in a pudding. Thomson realized that all atoms must contain electrons‚ and since the atoms had a neutral charge‚ they must also include protons. This led him and other to think of the atom as a positively charged cloud with electrons randomly scattered in it. Rutherford later found this model
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ion n will attract together because they have the opposite charges. Then an ionic bond is formed. How do covalent bonds form? A covalent bond is for sharing of electrons. I remember it like co-existing electrons to share (Eg H20). It is usually between two non-metals. Which compound‚ sugar or salt‚ is a better conductor of electricity? Explain your answer. Salt‚ because it’s an ionic compound (there isn’t a real bond‚ but a charge separation e.g. NaCl in reality is Na+ Cl-) Part One:
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H₂S forms a gas. What is meant by the electronic structure of an atom? This describes how the electrons are organized around the nucleus of an atom. The protons and electrons of an atom both have an electrical charge. While a proton has a positive charge‚ an electron has a negative charge and when
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underlying electrons require space so the electrons of the outer shell is farther from the nucleus. • In a period‚ going across the period‚ a proton is added to each nucleus and an electron is added to each outer shell. In each‚ the effective nuclear charge increases slightly because the effect of each additional proton is more important than the effect of an additional electron. The result is the attraction between the nucleus and electrons increase • Transition metals- from left to right‚ the radii
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Introduction This experiment tests electrical conduction. Electrical conduction is the transportation of an electrical charge through a substance. This is done by the electrical charge/current being sent through the substance via electrons. These electrons carry the electrical current/charge throughout the substance’s length until another conductor is able to receive the electrons charge. Part B: Risk Assessment: During the construction of “the modified hurler‚ “ there
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Electrophoresis has a few different uses such as establishing the size of a strand or molecule of DNA or RNA. (Bowen) It can also be used to find out family members or criminals or tests of that manner. This is all possible because of the DNA’s charge and the charge of the molds. Although if a DNA molecule is too big it is not going to be able travel fast through the so it is better for the experiment if the DNA molecules are small. To get the DNA small restriction enzymes are used.(Roberts) Restriction
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