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Concept explainers
Interpretation:
The correct statement about metallic and nonmetallic elements has to be chosen from the given options.
Concept Introduction:
Metals are elements that have characteristic properties of thermal conductivity, luster, electrical conductivity, and malleability. Except mercury, the physical state of all other metals is solids. They have very high melting points and high density.
Nonmetals are elements that are characterized by the absence of properties like thermal conductivity, luster, electrical conductivity, and malleability. Mostly nonmetals are gases. Only bromine is present as liquid in room temperature. The density of nonmetals is low and they have lower melting points than metals.
In the periodic table, a total of 23 elements are nonmetals. The metallic property of the elements decreases as moving from left to right across the period in a periodic table. The elements that are present in right side of the periodic table are nonmetals.
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Chapter 3 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Isotopes differ from each other only in the number of electrons they contain. Select one: a. True b. Falsearrow_forwardThe figure below shows a comparison of the relative abundances of the most common elements found in the human body and the Earth's crust. Based on this graph, please answer the question below. Figure 2-4 percent relative abundance 70 60 50 m 20 10 human body Earth's crust HCON Ca Na P Al Si others and and Mg Karrow_forwardWhich of the following statements is not true?a. Water is polar.b. Water stabilizes temperature.c. Water is essential for life.d. Water is the most abundant atom in Earth’s atmosphere.arrow_forward
- The following is made up of two or more different types of elements grouped together as a unit: O a. Cell Ob. Atom O c. Molecule O d. Compound Oe. Tissuearrow_forwardWhich elements in each pair is more metallic? Silicon or aluminumarrow_forwardChoose an element from the periodic table that is found in the human body, and write five sentences about some of its functions in the body.arrow_forward
- Which of the following is a representation of a covalently bonded molecule that shows the relative size and position of atoms in three dimensions? A. Structural model B. Structural formula C. Shell model D. Chemical formulaarrow_forward.Which of the following substances would be considered basic? A. hydrochloric acid (pH 1.0) B. milk (pH 6.6) C. baking soda (pH 8.1) D. water (pH 7.0) E. Dr. Pepper (pH 3.0)arrow_forwardWhich of the following statements is not true? a. Water is polar. b. Water stabilizes temperature. c. Water is essential for life. d. Water is the most abundant molecule in the Earth’s atmosphere.arrow_forward
- Which of the following statements about chemicalbonds is true?a. Covalent bonds are stronger than ionic bonds.b. Hydrogen bonds occur between two atoms ofhydrogen.c. Bonding readily occurs between nonpolar andpolar molecules.d. A molecule of water is unlikely to bond with anion.arrow_forwardMagnesium has an atomic number of 12. Which of the following statements is true of a neutral magnesium atom? a. It has 12 protons, 12 electrons, and 12 neutrons. b. It has 12 protons, 12 electrons, and six neutrons. c. It has six protons, six electrons, and no neutrons. d. It has six protons, six electrons, and six neutrons.arrow_forward1. 2. 3. 4. 5. 6. 7. What are the top elements that make up 96% of the human body? The image here shows the periodic table designation for Magnesium. a. What is the atomic mass? b. What is the atomic number? c. Draw the atomic structure and label protons, neutrons and electrons. 12 Mg 24.305 Compare and contrast the three types of bonds: Ionic Bond Covalent Bond Hydrogen Bond How do the electrons interact in each type of bond? Define pH and explain how it is measured. What is the difference between a base and an acid? List and EXPLAIN the four important characteristics of water that allow it to sustain life? Compare and contrast dehydration synthesis and hydrolysis. Draw a diagram on the formation and breakdown of the Disaccharide Sucrose to show how this occurs.arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
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