Fill in the blanks. Choose your answer from the word böx Matter refers to all the 1. ohuds nce and materials around us. The presence on matter. Among these com _of oxygen has various 3. that you readily see are 4. and 5.

Complete Textbook Of Phlebotomy
5th Edition
ISBN:9781337464314
Author:Hoeltke
Publisher:Hoeltke
Chapter10: Sample Preparation And Handling
Section: Chapter Questions
Problem 4RQ
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4. After 30 minutes, bring out the two halves and observe the changes in them.
5. Dip the two coins in the vinegar for five minutes.
bag, then seal it. Set the bag aside for 30 minutes.
7. Leave the other coin exposed to air for 30 minutes.
8. After 30 minutes take out the coin from the bag then observe the two coins.
Record your observation in the table.
Sample
apple
While inside the bag
Exposed to air,
prevent birds eat heni caused shiced fuit tobroun
nD one happened
coin
turnsdulluhenegheur
Guided Questions:
1. Which of the two environments allowed the materials to react with oxygen? Explain your
answer?
2. What happened to the materials that were exposed to air??
bxidebrcur sasmetalzact suthangantortncreochoh,fegereral equationiskindatikonas
3. What can you say about the effectof oxygen on the materials that you need?
WHAT I LEARNED (GENERALIZATION)
Fill in the blanks. Choose your answer from the word box below.
Matter refers to all the 1. objuds
ODsence
ones that you readily see are 4.
and materials around us. The presence o
of oxygen has various 3.
on matter. Among these com
and 5.
Word box:
combustion
rusting
effects
absence
presence
objects
triangle
WHAT I CAN DO ABOUT IT (APPLICATION)
Answer the following questions.
1. What are the changes that commonly occurred in our surroundings? How do these changes at
our daily lives?
CHALLENGE (EVALUATION)
Choose the letter of the correct answer.
1. Which of the following could indicate that a chemical change took place?
B. change in temperature
C. formation of gases
D. all of the a
A. change of color
2. Which of the following produce carbon dioxide?
C. through photosynthesis
A. through combustion
B. fermentation of sugar
D. decomposition of carbonates
3. Which of the following is NOT evidence of chemical change?
B. gas is produced
C. change in color
D. new substance is
A. change in texture
4. Sarah put a sugar cube in a cup and watched what happened. The sugar cube
nh came to check the cup again the next day, the sugar wasack in the cup and
2020.11.07 14:56
LOrneriment an example of?
Transcribed Image Text:4. After 30 minutes, bring out the two halves and observe the changes in them. 5. Dip the two coins in the vinegar for five minutes. bag, then seal it. Set the bag aside for 30 minutes. 7. Leave the other coin exposed to air for 30 minutes. 8. After 30 minutes take out the coin from the bag then observe the two coins. Record your observation in the table. Sample apple While inside the bag Exposed to air, prevent birds eat heni caused shiced fuit tobroun nD one happened coin turnsdulluhenegheur Guided Questions: 1. Which of the two environments allowed the materials to react with oxygen? Explain your answer? 2. What happened to the materials that were exposed to air?? bxidebrcur sasmetalzact suthangantortncreochoh,fegereral equationiskindatikonas 3. What can you say about the effectof oxygen on the materials that you need? WHAT I LEARNED (GENERALIZATION) Fill in the blanks. Choose your answer from the word box below. Matter refers to all the 1. objuds ODsence ones that you readily see are 4. and materials around us. The presence o of oxygen has various 3. on matter. Among these com and 5. Word box: combustion rusting effects absence presence objects triangle WHAT I CAN DO ABOUT IT (APPLICATION) Answer the following questions. 1. What are the changes that commonly occurred in our surroundings? How do these changes at our daily lives? CHALLENGE (EVALUATION) Choose the letter of the correct answer. 1. Which of the following could indicate that a chemical change took place? B. change in temperature C. formation of gases D. all of the a A. change of color 2. Which of the following produce carbon dioxide? C. through photosynthesis A. through combustion B. fermentation of sugar D. decomposition of carbonates 3. Which of the following is NOT evidence of chemical change? B. gas is produced C. change in color D. new substance is A. change in texture 4. Sarah put a sugar cube in a cup and watched what happened. The sugar cube nh came to check the cup again the next day, the sugar wasack in the cup and 2020.11.07 14:56 LOrneriment an example of?
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