Atoms

Question 1

What is the middle of the atom called?

Answer 1

The nucleus

Question 2

What can be found in the nucleus?

Answer 2

Protons and Neutrons

Question 3

What can be found in the energy levels around the nucleus?

Answer 3

Electrons

Question 4

What charge does a proton have?

Answer 4

+1

Question 5

What charge does a neutron have?

Answer 5

0

Question 6

What charge does an electron have?

Answer 6

-1

Question 7

What mass does a proton have?

Answer 7

1

Question 8

What mass does a neutron have?

Answer 8

1

Question 9

What mass does an electron have?

Answer 9

0 (almost nothing)

Question 10

Where is most of the mass in the atom concentrated?

Answer 10

The nucleus

Question 11

What is the radius of the nucleus compared to the radius of the atom?

Answer 11

Less than 1/10,000

Question 12

What changes the arrangement of electrons?

Answer 12

Electromagnetic radiation

Question 13

What is electromagnetic radiation?

Answer 13

It is a form of energy. Light is a type of electromagnetic radiation, but there are plenty of other types. Sound isn’t a type, as electromagnetic radiation can travel through space and doesn’t need a medium like air or water to travel through like sound does. it is made when an atom absorbs energy. This causes one or more electrons to change their locale in the atom. When the electron returns to its original position, an electromagnetic wave is produced. Depending on the kind of atom and the amount of energy, the electromagnetic radiation can take the form of heat, light, ultraviolet, or other electromagnetic waves.

Question 14

Will the electrons move further away from the nucleus or closer to it with the absorption of electromagnetic radiation?

Answer 14

Further away

Question 15

Will the electrons move further away from the nucleus or closer to it with the emission of electromagnetic radiation?

Answer 15

Closer to it

Question 16

What is the mass number?

Answer 16

The number of protons and neutrons

Question 17

What is the atomic number?

Answer 17

The number of protons

Question 18

If an atom loses an electron does it become positively charged or negatively charged?

Answer 18

Positivley charged

Question 19

If an atom gains an electron does it become positively chared or negatively charged?

Answer 19

Negatively charged

Question 20

What is an ion?

Answer 20

A charged atom. It is charged because the number of electrons does not equal the number of protons. An atom can have a negative or positive charge depending on whether there are more electrons or protons in the atom.

Question 21

If an atom loses an electron is it a positive or negative ion?

Answer 21

A positive ion (it has one more proton than electrons and so it will have a more positive charge)

Question 22

If an atom gains an electron is it a positive or negative ion?

Answer 22

A negative ion (it has one more electron than it has protons so it will have a more negative charge)

Question 23

What determines the element (think atomic structure)

Answer 23

The number of protons

Question 24

What are isotopes?

Answer 24

Atoms with a different number of neutrons (same atomic number, different mass number)

Question 25

What is relative mass?

Answer 25

The average mass including all isotopes. In the periodic table, it is the decimal number