Chemical Change
What is a chemical change?
What is a change in the state of matter in which the material becomes a different material with different properties?
Give two examples of a chemical change.
Answers may vary. What is a browned banana, a burning candle, burnt toast, and digesting food?
What did you observe when you added the tablet to the bag of water?
What is it began fizzing?
Divide 783 by 9.
What is 87?
Your teacher will give you one of our spelling words.
Answers may vary.
Does the conservation of matter apply to chemical changes AND physical changes?
What are two signs that a chemical change has happened in burnt toast?
What is a change in color and production of smell?
Was any matter lost in this chemical change?
What is no?
Divide 419 by 7.
What is 59 R6?
Which prefix could be added to the word responsible to make it mean “careless or thoughtless”?
What is "ir" (irresponsible)?
What is no?
What are 5 signs of a chemical change mentioned in our book?
What are bubbles, changes in color, and production of smells, light, and heat?
What evidence shows that a new substance formed? (a sign of chemical change)
What are bubbles?
Vivian has a 550-page book on folk tales. If she reads 9 pages every day before falling asleep, about how many days will it take her to finish the book?
Choose the word that is correctly divided into syllables in each item below.
C.pop/ul/ation, D.in/for/ma/tion
What is D.in/for/ma/tion?
What is a chemical reaction?
What is the process by which a chemical change occurs?
What are the signs a chemical reaction has happened in a burning candle?
What is heat, light, smell, and smoke?
How did the tablet in water demonstrate the conservation of matter?
What is the mass of the materials after the reaction was the same as the mass of the materials before the reaction?
Deena plans to share yogurt cups with 3 classmates. If she has 5 vanilla yogurt cups and 2 strawberry yogurt cups, how many yogurt cups will each friend receive?
What is 2 yogurt cups?
Choose the word that has the same r-controlled vowel sound as "sparks".
A.alert, B.borrow, C.dirty, D.perhaps
What is B. borrow?
In a glowstick how does a chemical reaction release energy?
What is in the form of light? A glowstick contains a liquid and a small glass capsule filled with a second liquid; when the stick is bent, the capsule inside breaks and the two liquids mix causing a chemical reaction.
No matter what chemical change occurs, does the conservation of matter still apply? Why or why not?
In our pumpkin experiment we combined baking soda and vinegar, 1. Was this a physical change or a chemical change? 2. Was new matter created? What was it? 3. What sign did you observe that supports your first answer? 4. Was matter lost in this experiment if we were to measure everything before and after?
What is 1. A chemical Change, 2. Yes, carbon dioxide (gas), 3. Bubbles, 4. No matter was lost due to the conservation of matter?
Jonathan needs two different kinds of socks for school. A pair of gym socks costs $3, and a pair of dress socks costs $5. If he spent a total of $50 on socks, how many of each type of sock did he purchase if the total number of pairs of socks is 12?
What is 5 pairs of gym socks and 7 pairs of dress socks?