Unit 1 – Lesson 1 Chemistry Key Questions 1. Element Standard Notation # Of Electrons # Of Protons # Of Neutrons Sodium 23 11 Na 11 11 12 Chromium 24 Ca 26 26 27 ? Phosphorus 32 P 15 15 16 2. Fireworks; Which metals burn to produce these colours? Red – Lithium (Sr) Blue – Cesium (Cs) Pink – Potassium (K) Yellow/Green – Copper (Cu) Orange – Carbon (Ca) 3. Let’s say that the three bottles contain Fe(NO3)3‚ BaCl‚ and AgNO3. These are Iron (III) Nitrate‚ Barium Chloride
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indicated by the Benedict’s test. (6 points) corn syrup (1 point) table sugar (1 point) unknown 1 (1 point) unknown 2 (1 point) unknown 3 (1 point) unknown 4 (1 point) List whether each of the following substances was positive or negative for starch‚ as indicated by using iodine. (7 points) onion juice (1 point) water (1 point) cornstarch (1 point) unknown 1 (1 point) unknown 2 (1 point) unknown 3 (1 point) unknown 4 (1 point) The Sudan III test has been performed for you. Please see the
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Sains Malaysiana 41(4)(2012): 445-452 Effects of Spin Contamination on the Stability and Spin Density of Wavefunction of Graphene: Comparison between First Principle and Density Functional Methods (Kesan Pemumusan Spin Terhadap Kestabilan dan Ketumpatan Spin bagi Fungsi Gelombang Grafen pelumusan: Perbandingan antara Kaedah Prinsip Pertama dan Kaedah Kefungsian Ketumpatan) LEE SIN ANG*‚ SHUKRI SULAIMAN & MOHAMED ISMAIL MOHAMED-IBRAHIM ABSTRACT The effects of spin contamination on the
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Breast Cancer Cancer is a disease that affects millions of individuals each year‚ however‚ breast cancer‚ the second most common type of cancer among women‚ is particularly frightening. Breast cancer is a disease in which malignant cells form in the breast tissue. It is considered a diverse disease‚ contrary to age and family history. According to the National Cancer Institute‚ an anticipated 182‚460 women will be diagnosed with and 40‚480 women will die of cancer of the breast in 2008. Although
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observations and predicts future ones a theory is a scientific opinion with very little observations to support it a theory is a method of learning that emphasizes reason as the way to understand the world none of the other answers apply 2. Exercise 1.17 Classify each of the following as an observation‚ a law‚ or a theory. Part A - When a metal is burned in a closed container‚ the mass of the container and its contents do not change. ANSWER: theory observation law Part
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Description of the Disease Normal cells grow‚ divide and die in an orderly fashion. In an adult‚ cells in most parts of the body divide only to replace worn-out cells and to repair injuries (Cuevas‚ 2007). However‚ these normal cells may be exposed to agents that cause their transformation to cancer cells. These agents are termed as “carcinogenic”. Another theory of how cancer develops states that the body itself produces abnormal cells. Normally‚ these abnormal cells are destroyed by immune system
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Part 2: Effects of Environment on Mitosis. Experimental Hypothesis: If we put onion root tips in IAA solution then the rate of Mitosis will increase. Null Hypothesis: There will be no difference Part 1- Post Lab Question If a cell contains a set of duplicated chromosomes‚ does it contain any more genetic information than the cell before the chromosomes were duplicated? No‚ because if it is duplicated‚ it would have the same number of chromosomes unless there was a
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------------------------------------------------- Module Two: Lab Questions Your first lab link can be found at Five Dangerous Things for Kids A written transcript is also available for this lab. 1. Do you agree with Gever Tulley that the increasing safety regulations for children are limiting children’s opportunities to interact with the world around them? Why or why not? Yes‚ I agree with Gever Tulley that increasing safety regulations for children are limiting children’s opportunities to
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Cervical Cancer Cervical cancer is one of the most preventable cancers‚ yet still remains the world’s third leading cancer killer in woman. All women are at risk for cervical cancer‚ and there is a higher occurrence in women over age thirty. Prevalence is much higher in countries with poor healthcare and poor economics in comparison to the United States. Research has been done and shows there is a genetic link for cervical cancer. Genetic testing can be beneficial at further assessing a women’s
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Lab 4 – The Cell Answer Key Procedure 4.3 Draw a picture of a single Elodea cell and label all visible structures. See the diagram in your lab manual. Without staining‚ the only structures that should have been clearly visible should have been the cell walls and the green chloroplasts. Is this cell prokaryotic or eukaryotic? ______Eukaryotic_______________________ What evidence do you have to support this claim? The presence of organelles (chloroplasts) and its large size.
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