Science Quest Chemistry

Question 1

What are the three subatomic particles that make up an atom?

Answer 1

Protons, neutrons, electrons

Question 2

which subatomic particles can “move’’ from the atom

Answer 2

Neutrons and electrons

Question 3

Electricity is the result of the movement of

Answer 3

ELECTRONS

Question 4

materials where electrons can move through easily is called

Answer 4

conductor

Question 5

materials where electrons cannot move through is called

Answer 5

insulator

Question 6

examples of conductors

Answer 6

metal, tap water

Question 7

examples of insulators

Answer 7

Plastic, glass, wood

Question 8

objects with equal number of protons and electrons have what charge

Answer 8

neutral charge

Question 9

objects with more electrons (negatives) than protons have what charge

Answer 9

negative charge

Question 10

objects with less electrons (negatives) have what charge

Answer 10

positive charge

Question 11

laws of electric charges: what do like charges do?

Answer 11

repel

Question 12

laws of electric charges: what do opposite charges do?

Answer 12

attract

Question 13

If we bring a negatively charged object towards a neutral one, what happens inside the neutral object?

Answer 13

The electrons in the neutral object are repelled by the negatively charged object while the protons are attracted. Result: the two objects are attracted

Question 14

what is static electricity?

Answer 14

Static electricity is the result of electrons being added or removed from an object. When the number of electrons is changed, the object is charged

Question 15

Ways to charge objects

Answer 15

friction, conudction, induction

Question 16

what is charging by friction?

Answer 16

Charging by friction is transferring electrons between two neutral objects when they are rubbed together. Some substances tend to give, other take electrons. Leaves one object positively charged and other negatively charged

Question 17

what is the electrostatic series

Answer 17

a list of materials arranged by likelyhood of gaining electrons. As you move down list tendency to gain electron increases

Question 18

How are the electrons moving when we rub a balloon against our hair?

Answer 18

The electrons are moving from the hair to the balloon

Question 19

What would the charge of the hair be after rubbing a balloon against it?

Answer 19

positive

Question 20

what would the charge of the balloon be after rubbing against hair?

Answer 20

negative

Question 21

what is conduction?

Answer 21

Occurs when two objects with different charges come in contact

Question 22

where do the electrons for conduction move from?

Answer 22

objects with larger negative charge to objects with smaller negative charge

Question 23

If a negative rod touches a neutral object, what will happen?

Answer 23

Electrons will move from the rod to the neutral object

Result: the object is now negatively charged

Question 24

what is an electroscope?

Answer 24

device that can determine the presence of a charge on an object

If the object is charged, the metal leaves will repel

Does not determine if charge is positive or negative

Question 25

what is induction?

Answer 25

Induction is a static charge produced without making contact with a charged object

Question 26

what happens when a charged object comes in contact with a neutral object?

Answer 26

induces a charge

Question 27

what are the types of induction?

Answer 27

temporary induction and permanent induction

Question 28

What will happen if a negatively charged object is brought to a neutral one?

Answer 28

Negative charge repels electron in the neutral object Side of object closest to negative charge will have temporary positive charge

Question 29

What will happen if a positively charged object is brought to a neutral one?

Answer 29

Positively charged object will attract electrons in the object. Side of object closest to positive charge will have temporary negative charge

Question 30

what is grounding?

Answer 30

Grounding is connecting a charged object to the ground

Question 31

how does grounding work?

Answer 31

Large objects, like the Earth, have a lot of positive and negative charges. This provides a path for charges to travel to or from the ground. Results in electric charge of an object being removed (neutralized)

Question 32

what happens when charged object comes close to grounded object

Answer 32

If an object is grounded and a charge object is brought near, the induced charge will be permanent Electrons will either be removed from the object or gained by the object Then the ground is removed before the charged object The result is the neutral object being permanently charged to the opposite charge of the initial charged object used

Question 33

electrical discharge: what happens when an object is charged?

Answer 33

charges are trapped unless given a path to escape

Question 34

ways to discharge and object...

Answer 34

grounding, exposure to air, lightning

Question 35

what happens when you connect a charge with ground

Answer 35

allows electrons to flow to or from ground to neutralize the object

Question 36

why is air a form to discharge?

Answer 36

In air (insulator) electrons cannot easily flow They repel each other, causing sparks in the air When charges flow through the air, it excited the air particles causing them to give off light