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Chemical changes
Page 3
Questions (162)
The diagram shows a test tube of pure copper (II) sulfate, CuSO4
, solution before and after the addition of iron, Fe , shavings.
1 answer
asked by
Bray
40 views
The diagram shows a test tube of pure copper (II) sulfate, CuSO4
, solution before and after the addition of iron, Fe , shavings.
1 answer
asked by
Bray
37 views
What do these two changes have in common? rust forming on a metal gate snails growing shells (1 point) Responses
Both conserve
1 answer
asked anonymously
42 views
How are chemical changes different from physical changes?(1 point)
Responses They include shifts in the phase of matter. They
1 answer
asked anonymously
28 views
How are chemical changes different from physical changes?(1 point)
Responses They include shifts in the phase of matter. They
1 answer
asked anonymously
37 views
Which of the following equations shows a chemical change?(1 point)
Responses C2H5OH(l)→C2H5OH(g) C 2 H 5 O H, which is a liquid
1 answer
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25 views
Which of the following demonstrates a chemical change?(1 point)%0D%0AResponses%0D%0A%0D%0Airon (Fe) reacting to
1 answer
asked anonymously
35 views
What do these two changes have in common?
⚫ rust forming on a metal gate ⚫ snails growing shells (1 point ) Both conserve
2 answers
asked anonymously
122 views
Which of the following is not an indication of a chemical change?
the substance dissolves formation of a precipitate formation of
1 answer
asked anonymously
17 views
Which option is an example of a chemical change? (1 point)
folding paper burning wood chopping vegetables stretching a rubber
1 answer
asked by
hello!
39 views
How are chemical changes different from physical changes? (1 point)
They involve heat. They are reversible. They include shifts
1 answer
asked by
hello!
68 views
What do these two changes have in common?
• rust forming on a metal gate • snails growing shells Can it be chemical changes?
3 answers
asked by
Lotus
76 views
Which of the following is a chemical change?
a Water vapor in the air turns to liquid water in the form of rain b The oxygen in
1 answer
asked anonymously
34 views
tobacco leaf as it changes from green to brown
Is this a chemical change?
1 answer
asked by
trippie
18 views
1-Is this an image of a chemical change?
2-What happens to molecules in each object as they change? you will observe a chemist
1 answer
asked by
trippie
16 views
1-Is this an image of a chemical change?
2-What happens to molecules in each object as they change? you will see a tobacco leaf
1 answer
asked by
trippie
18 views
1-Is this a chemical change?
2-What happens to molecules in each object as they change? person is holding a piece of gallium
1 answer
asked by
trippie
16 views
Which of the following describes a chemical change? (1 point)
a change in the size of an object a reversible change in the color
1 answer
asked anonymously
31 views
Which of the following represents a chemical change?
a) Melting of ice b) Burning of wood c) Breaking of glass d) Evaporation of
1 answer
asked anonymously
23 views
True or False. Changing the size of pieces of wood is a chemical change.
1 answer
asked anonymously
8 views
Which of the following example demonstrates the reversibility of a chemical change?(1 point) Responses the rotting of eggs the
1 answer
asked anonymously
21 views
Which of the following happens during a chemical change but does not happen during a physical change?(1 point) Responses The
1 answer
asked anonymously
19 views
Which is not a clue that a chemical change has taken place?
bubbles in water changes color when heated disappears in acid boils
1 answer
asked by
e
31 views
Which of these is an example of a chemical change?
Responses crushing ice with a hammer crushing ice with a hammer smelling
1 answer
asked by
JAKE
13 views
Which is a chemical change?
Answer options with 4 options A. melting ice B. rotting fruit C. breaking wood D. evaporating water
1 answer
asked by
Lettuce?
32 views
Which of the following most likely happens during a chemical change?
a) No new substances are formed. b) Properties of a
1 answer
asked anonymously
28 views
There are numerous examples of chemical changes that occur in the world around us. One common example is the process of
1 answer
asked anonymously
32 views
Justin is making a snack. He toasts a piece of bread and spreads peanut butter and jelly on it. Then he cuts an apple into
1 answer
asked anonymously
19 views
Investigations were carried out in a science lab to explore the topic of chemical and physical changes.
Investigation A Step 1.
1 answer
asked anonymously
29 views
Powdered drink mix is added to water
Physical or chemical change?
1 answer
asked anonymously
20 views
Puddle evaporates
Physical or chemical change
1 answer
asked anonymously
21 views
Michael has recorded his observations while mixing vinegar and baking soda in a beaker.
Which observation supports Michael’s
1 answer
asked by
ANSWER CORRECTLY
18 views
Michael has recorded his observations while mixing vinegar and baking soda in a beaker.
image ab17ec12a8814e03b67c07f3da5f7ab8
1 answer
asked anonymously
63 views
Two friends are discussing physical and chemical changes. Isabela says that when you eat, it is a physical change because when
1 answer
asked anonymously
18 views
Use the diagram to answer the question .
The wax in the candle above is _____. giving off heat and light energy undergoing a
1 answer
asked anonymously
19 views
Joy mixed baking soda and vinegar for her volcano model. She saw lots of bubbling and fizzing. What can she infer happened?
Group
1 answer
asked anonymously
12 views
Which option is an example of a chemical change?(1 point)
Responses burning wood burning wood stretching a rubber band stretching
1 answer
asked anonymously
16 views
Chemical and physical changes are fundamental concepts in the study of matter and its transformations. A physical change
3 answers
asked anonymously
19 views
Joe watches a candle burn. What chemical change does he observe?(1 point)
Responses The candle wax changes shape The candle wax
1 answer
asked anonymously
20 views
Joe watches a candle burn. What chemical change does he observe?(1 point) Responses The heat melts the candle wax The heat melts
1 answer
asked anonymously
50 views
A person mixes two liquids together as shown in the illustration below.
Clear Yellow solid Substance X Mass 150 g Substance Y
3 answers
asked by
Cupidsvz
68 views
Joe watches a candle burn. What chemical change does he observe?(1 point)
Responses The heat melts the candle wax The heat melts
1 answer
asked by
@~@
36 views
Which procedure could be used to demonstrate that matter is conserved during a chemical change or reaction?(1 point)
Responses
1 answer
asked anonymously
24 views
joe watches a candle burn. what chemical change does he observed?
responses: the candle wax changes shape the heat melts the
1 answer
asked anonymously
19 views
Joe watches a candle burn. What chemical change does he observe?(1 point)
Responses The heat melts the candle wax The heat melts
1 answer
asked anonymously
31 views
Joe watches a candle burn. What chemical change does he observe?(1 point)
Responses The heat melts the candle wax The heat melts
1 answer
asked by
hi :)
34 views
Joe watches a candle burn. What chemical change does he observe?(1 point)
Responses The candle wax turns liquid as it burns The
1 answer
asked anonymously
37 views
A person mixes two liquids together as shown in the illustration below.
The person can conclude that there was a chemical change
1 answer
asked by
hi :)
12 views
A person mixes two liquids together as shown in the illustration below. The person can conclude that there was a chemical change
1 answer
asked anonymously
11 views
Joe watches a candle burn. What chemical change does he observe?(1 point)
Responses The candle wax changes shape The candle wax
1 answer
asked anonymously
15 views
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Parent Categories (5)
Changes
Chemistry
Physical and Chemical Changes
Solutions and Reactions
Types of Reactions