Homework 7/8

Page 130 #1-12

11.    A) Physical Property

B) Chemical Property

C) Chemical Property

D) Physical Property

22.    A) Physical Property

B) Chemical Property

C) Chemical Property

D) Physical Property

33.    A) Chemical Change

B) Chemical Change

C) Physical Change

D) Physical Change

44.    A) Chemical Change

B) Physical Change

C) Physical Change

D) Chemical Change

55.    A) It begins to rot because of the oxygen inserting the apple and causing it to bruise and turn a brownish color.

B) The batteries run out of electrical charges.

C) The soap and cleaning products take out the oils from the clothes

D) The oils and other liquids separate because of their inability to mix as a homogeneous mixture.

66.    A) To make chocolate chip cookies you mix flour, milk, eggs, sugar, and chocolate chips together in a bowl. Then, roll the dough up and out it on the baking sheet and into the oven, when finished allow cooling.

B) Mixing the ingredients together is a physical change because nothing chemically changes in the actual dough; all the ingredients stay the same. However, baking the cookies is a chemical change because the heat, density, and structure of the cookies permanently change.

77.    A) Metals

B) Nonmetals

C) Nonmetals

D) Metals

88.    A) Metal

B) Metalloid

C) Nonmetal

D) Metal

99.    Germanium (Ge) and Silicon (Si)

110. A) Iodine is a nonmetal, so it would shatter

B) Zirconium is a metal, so it would flatten

C) Phosphorus is a nonmetal, so it would shatter

D) Nickel is a metal, so it would flatten

111. Malleability and gas

112. High luster, brittle, and density