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stellarik [79]
3 years ago
14

To find out if the height from which a student drops a ball affects how high the ball bounces, the independent variable is the

Chemistry
1 answer:
N76 [4]3 years ago
4 0

Answer:

The independent variable is the height of the ball that bounces.

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What happens to the number of valence electrons as you move from element 1 to element 18 on the periodic table?
BARSIC [14]

Answer:

B

Explanation:

the group number is=valence electrons. element 1 is in group 1 element 18 is in group 8. 1<8

6 0
3 years ago
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tate whether the following changes are physical or chemical for rancidipication fixation of water 2 tearing of paper 3 rusting o
damaskus [11]

Answer: Physical change : tearing of paper, fixing of wtaer

Chemical change:  rusting of iron ,  electrolysis of water​, Rancidification

Explanation:

Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.

Example:  tearing of paper, fixing of wtaer

Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.

Example: rusting of iron ,  electrolysis of water​, Rancidification

3 0
2 years ago
The distance from the sun to earth would be ______.
Dvinal [7]
C- more than one light year or B-exactly one light year
8 0
3 years ago
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You are measuring the mass of different chemicals to get ready to conduct an experiment.
Leto [7]

Answer:

Explanation:

B

4 0
3 years ago
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Gizmo Warm-up
Mariana [72]

Sodium hydroxide solution and hydrogen gas are produced from the reaction of water and sodium.

<h2>Reaction of sodium and water</h2>

We observe bubbles coming out of the water when the sodium reacts with the water because of the formation of hydrogen gas which is insoluble in water so it moves into the atmosphere.

<h3>Products of the reaction</h3>

Sodium metal reacts rapidly with water to form sodium hydroxide (NaOH) solution and hydrogen gas (H2). This chemical reaction is exothermic because huge amount of heat is release from the solution so we can conclude that sodium hydroxide solution and hydrogen gas are produced from the reaction of water and sodium.

Learn more about chemical reaction here: brainly.com/question/26018275

Learn more: brainly.com/question/26167984

8 0
2 years ago
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