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eminh5145
eminh5145
23.11.2019 • 
Chemistry

50 points and will mark !
1. mary bought an apple for lunch. she found the weight of the apple on the spring scale in the store and estimated how much her apple would cost. when she got home she washed the apple, cut it in half, and placed it in a zip-lock bag. mary refrigerated the apple over night. the next morning the apple, was crisp, cold, and the cut surfaces had turned brown.
mary cut the apple in half is an example of
a) sublimation.
b) a chemical change.
c) a physical change.
d) a change of state.

2. which statement best describes the nuclear model of the atom?
a) negative charges dispersed in a positively charged cloud
b) positive charges dispersed in a negatively charged cloud
c) small, dense positive nucleus surrounded by a diffuse negatively charged cloud
d) small, dense negative nucleus surrounded by a diffuse positively charged cloud

3. which of these elements would have the largest atomic radius? (picture at the bottom)
a) c
b) f
c) li
d) ne


50 points and will mark ! 1. mary bought an apple for lunch. she found the weight of the appl

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