Question

A change in matter that does not produce a new substance is a chemical change.

Question 1 options:
True
False
Question 2 (2 points)


A neutron is a positively charged subatomic particle.
Question 2 options:
True
False
Question 3 (2 points)


An electron is a negatively charged subatomic particle.
Question 3 options:
True
False
Question 4 (2 points)


Which of the following particles are found in the nucleus of the atom?
Question 4 options:


Electrons and nitrons


Protons and Neutrons


Neutrons and electrons


Protons and Electrons
Question 5 (2 points)


The atomic number of an element tells the number of _______.
Question 5 options:


More than one of these


Protons


Neutrons


Electrons
Question 6 (2 points)


Boiling an egg is a ______ change.
Question 6 options:


Chemical


Physical
Question 7 (2 points)


Coloring a picture is an example of a ______ change.
Question 7 options:


Physical


Chemical
Question 8 (2 points)


The element Nitrogen has an atomic mass of 14 and an atomic number of 7. How many neutrons does an atom of Nitrogen have?
Question 8 options:


14


28


7


2
Question 9 (5 points)


Compare and contrast physical properties and chemical properties.
Question 9 options:

1 of 9 questions save

Answer 1

false

false

false

protons and neutrons

electrons

physical

physical

2

Step-by-step explanation:

Answer 2

1) False

2) False

3) True

4)Protons and Neutrons

5) Protons

6) Physical

7) Chemical

8) 7

Step-by-step explanation:

1) False : In a chemical change there is formation of new substance.

2) False: Neutron is a neutral subatomic particle

3) True: Electron is negatively charged and proton is positively charged

4) Protons and neutrons are present in nucleus and electrons outside the nucleus

5) Protons: The atomic number of an element is number of protons. In a neutral atom the number of protons is equal to number of electrons

6) Physical : There is change in bondings during the boiling of an egg.

7) Chemical :The color changes when there is change in the structure of compounds or any reaction

8) 7:

Mass number = atomic number + number of neutrons

Number of neutrons = 14- 7 = 7