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On the interactive screen below. Click on ATOM. Make sure the windows for Element, Net charge and Mass number are open. Complete the following questions using the interactive.

Build each atom first using the interactive.

1

This atom as 5 protons, 5 electrons and 6 neutrons. Which of the following is true?

The atomic number is 6 and the mass number is 11.

The atomic number is 5 and the mass number is 11

The atomic number is 5 and the mass number is 10

The atomic number is 6 and the mass number is 10

1

What is the net charge on an atom that has lost 3 electrons?

1

The atomic number of an atom is:

the number of electrons

the number of protons

the number of neutrons

the number of protons plus neutrons

1

The mass number of an atom is:

the number of electrons

the number of protons

the number of neutrons

the number of protons plus neutrons

1

An isotope:

has the same number of protons but different no's of neutrons

has the same number of neutrons but different no's of protons

has the same number of protons but different no's of electrons

has the same number of electrons but different no's of protons

1

If an atom has 6 protons and 7 neutrons, what is its mass number?

13

11

7

6

1

An atom has a net charge of +1. What could be true?

More neutrons than protons.

Equal protons and electrons.

Two more electrons than protons.

One more proton than electron.

1

Which part of an atom is responsible for chemical identity?

Protons

Neutrons

Valence shell

Electrons

1

How many electrons does a neutral atom with 15 protons have?

20

28

7

15

1

Build an atom interactive

Build an atom interactive

This atom as 5 protons, 5 electrons and 6 neutrons. Which of the following is true?

What is the net charge on an atom that has lost 3 electrons?

The atomic number of an atom is:

The mass number of an atom is:

An isotope:

If an atom has 6 protons and 7 neutrons, what is its mass number?

An atom has a net charge of +1. What could be true?

Which part of an atom is responsible for chemical identity?

How many electrons does a neutral atom with 15 protons have?

What is the electronic configuration of sodium?

This atom as 5 protons, 5 electrons and 6 neutrons. Which of the following is true?

What is the net charge on an atom that has lost 3 electrons?

The atomic number of an atom is:

The mass number of an atom is:

An isotope:

If an atom has 6 protons and 7 neutrons, what is its mass number?

An atom has a net charge of +1. What could be true?

Which part of an atom is responsible for chemical identity?

How many electrons does a neutral atom with 15 protons have?

What is the electronic configuration of sodium?