Elements are simple ___ made of the same type of . They cannot be ___
down chemically. There are about 118 known
elements and most elements are ___
They are in
appearance and are good ___ of heat and . Compounds are made from ___
or more elements chemically .

Heat is the total potential energy of a substance that can be transferred. true false

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.