Showing 1-2 out of 2
Ch 2a.docx-Ch 2a 1. Water can also
Ch_2a.docx-Ch 2a 1. Water can also
Ch 2a.docx-Ch 2a 1. Water can also
Ch_2a.docx-Ch 2a 1. Water can also
Page 1
22
Ch 2a
1.
Water can also exist as a gas that is called
a. ice.
* b. steam.
c.
the melt.
d. molecules.
e.
atomic water.
Section 2.1
Difficulty Level: easy
2. An example of a chemical change is
a. the mixing of glucose with table salt.
b. the dissolving of table salt in water.
*
c. sodium combining with chlorine to form table salt.
d. mixing rust with sand.
e. mixing chalk with helium in a balloon.
Section 2.1
Difficulty Level: easy
3.
Which of the examples below is a chemical change?
a.
A bottle of wine completely evaporates in two weeks.
* b. Bleach
changes
the
color
of
the
stain
on
the
white
shirt.
c.
The ‘dry ice’ (solid CO
2
) changes to vapor.
d.
Bubbles form in the water when He gas is blown into the water.
e.
These are all examples of chemical change.
Section 2.1
Difficulty Level: easy
4.
Which is an example of a chemical reaction?
a.
the separation of air into oxygen, nitrogen, and other components
* b. the separation of a compound into its elements
c.
the separation of gases from liquids
d.
the separation of a mixture into its components
e.
the separation of solids from liquids
Page 2
23
Section 2.1
Difficulty Level: easy
5.
Which one of the following is a physical change?
a.
When ignited with a match in open air, paper burns.
* b. In cold weather, water condenses on the inside surface of single pane windows.
c.
When treated with bleach, some dyed fabrics change color.
d.
When heated strongly, sugar turns dark brown.
e.
Grape juice left in an open unrefrigerated container turns sour.
Section 2.1
Difficulty Level: easy
6.
Which is an example of a physical change?
* a. The ‘dry ice’ (solid CO
2
) changes to vapor.
b.
A bottle of wine turns into vinegar in a few months.
c.
Bleach changes the color of the stain on the white shirt.
d.
Bubbles form on the egg shell when it is placed in the vinegar.
e.
A portion of the figurine dissolves after being placed in the container of acid.
Section 2.1
Difficulty Level: easy
7.
Which one of the following examples does not involve a chemical change?
a.
A fish that is left for some time in an unrefrigerated place decomposes.
b.
Apple juice which is left in an open bottle, ferments.
c.
A loaf of bread rises and its volume expands when it is baked in an oven.
* d. When a lake starts to freeze in winter, ice is formed on the surface.
e. When sugar is fermented under certain conditions, alcohol is produced.
Ace your assessments! Get Better Grades
Browse thousands of Study Materials & Solutions from your Favorite Schools
Florida Agricultural and ...
Florida_Agricultural_and_Mechanical_University
School:
Organic_Chemistry_II
Course:
Great resource for chem class. Had all the past labs and assignments
Leland P.
Santa Clara University
Introducing Study Plan
Using AI Tools to Help you understand and remember your course concepts better and faster than any other resource.
Find the best videos to learn every concept in that course from Youtube and Tiktok without searching.
Save All Relavent Videos & Materials and access anytime and anywhere
Prepare Smart and Guarantee better grades
Know more
Students also viewed documents
lab 18.docx
lab_18.docx
Course
Course
3
Module5QuizSTA2023.d...
Module5QuizSTA2023.docx.docx
Course
Course
10
Week 7 Test Math302....
Week_7_Test_Math302.docx.docx
Course
Course
30
Chapter 1 Assigment ...
Chapter_1_Assigment_Questions.docx.docx
Course
Course
5
Week 4 tests.docx.do...
Week_4_tests.docx.docx
Course
Course
23
Week 6 tests.docx.do...
Week_6_tests.docx.docx
Course
Course
106
