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Here is a description of Anna after she went on vacation to a summer resort. Anna has blue eyes. Anna’s lips are chapped. Anna’s skin is tanned. Which of these is genetic, which is environmental, and which is the environment acting on a genetic factor?. 60. 140. 130. 120. 40. 50. 30.
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Here is a description of Anna after she went on vacation to a summer resort. • Anna has blue eyes. • Anna’s lips are chapped. • Anna’s skin is tanned. • Which of these is genetic, which is environmental, and which is the environment acting on a genetic factor? 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 80 20 90 160 150 170 100 110 1 Seconds Left:
B. Nonmetal Ten of the sixteen nonmetals are gases at room temperature. Other properties of nonmetals include poor conductors of electricity and heat and are reactive with other elements. Solid nonmetals are dull and brittle.
Which property of aluminum makes it a suitable metal for soft drink cans? • It has good electrical conductivity. • It can be hammered into a thin sheet (malleability). • It can be drawn into long wires (ductility). • It can reflect light (shininess). 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 80 20 90 160 150 170 100 110 1 Seconds Remaining:
Why is an atom neutral? 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 80 20 90 160 150 170 100 110 1 Seconds Remaining:
An atom is neutral because it has the same number of protons and electrons which have opposite charges that cancel each other out.
Draw two isotopes of carbon and give the mass number of each. 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 80 20 90 160 150 170 100 110 1 Seconds Left:
How can an element’s properties be predicted? 130 120 60 70 40 50 30 10 140 8 7 6 5 9 4 3 2 80 180 20 160 90 150 170 0 100 110 1 Seconds Left:
An element’s properties can be predicted by looking at its location on the periodic table.
List the three kinds of particles that make up atoms, and compare their masses and their locations in an atom. 60 140 130 120 40 50 30 10 70 8 7 6 5 9 4 3 2 0 180 20 90 160 150 170 80 100 110 1 Seconds Left:
Electrons are located outside the nucleus of the atom and have almost no mass. Protons are located inside the nucleus of the atom and have a mass of 1. Neutrons are located inside the nucleus of the atom and have a mass of 1.