Chemistry test unit 1 to 5

Question 1

Investigation 1

What pattern of interaction have we seen between the following types of objects?

A: Neutral + Neutral = 
B: Negative + Negative = 
C: Positive + Positive =
D: Neutral + Positive =
E: Neutral + Negative +

Answer 1

A: None
B: Repulsion 
C: Repulsion
D: Attraction 
E: Attraction

Question 2

What are ways Neutral objects can come in contact with another object and become charged?

Answer 2

By the objects rubbing or transferring energy like the pie pans and the VDG

Question 3

How did we determine the charge of the B and T tape? How did we know which one was + and -?

Answer 3

Well we saw how they both interacted with each other and then we tried it with nuetral objects to know which tape was negative or positive

Question 4

Investigation 2

Use pointers to represent the charges around the particles, draw the field.

Answer 4

Arrows either facing away or close to each other depending on the charge, then the charges fading away showing how strong the attraction is

Question 5

What happens to the force between the two charged particles when they are moved further away?

Answer 5

When the two charges start moving away from each other the electric field and force starts to weaken

Question 6

What happens to the force between two charged particles when the strength of the charges increase?

Answer 6

It gets stronger when the charge particles get closer( the arrows around the particles start to become a brighter green, which is showing maybe the strength of the field)

Question 7

Investigation 3

Why 5 ml of water and 5 ml of ethanol does not add up to 10 ml when mixed together?

Answer 7

it does not add up together becausep[‘n

Question 8

Why are gasses compressible?

Question 9

Do gasses have mass? How did we figure it out?

Question 10

Investigation 4

What effect does protons, neutrons and electrons have on the atom’s elements?

Question 11

What effect does protons, neutrons and electrons have on the atom’s mass?

Question 12

What effect does protons, neutrons and electrons have on the atom’s charge?

Question 13

In an atom where are the protons, neutrons, and electrons each located?

Question 14

What are the forces holding the different parts of an atom together?

Question 15

What are the forces pushing the different parts of an atom apart?

Question 16

Investigation 5

How does an atom become and atom with a charge of +1 in the real world?

Question 17

How does an atom become and atom with a charge of -1 in the real world?