Protons, Neutrons, and Electrons, Identify Atomic Structures

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Atomic number

Number of protons and electrons in an atom

Electron

Part of the atom with a negative charge

Proton

Part of the atom with a positive charge

The atomic number of an element is the total number of which particles in the nucleus?

Protons

Mass Number

Total number of protons and neutrons

Average Atomic Number

Weighted average of isotopes of each element

Atomic Mass

What does the letter Z represent?

Helium

What element does this model represent?

Neon

What element has 10 neutrons?

Scandium

What element has 24 neutrons?

Gallium

What element has 39 neutrons?

Barium

What element has 81 neutrons?

Radon

What element has 86 Electrons?

Radium

What element has 88 protons?

1 AMU

What is the mass of a proton?

Mass of almost 0

What is the mass of an electron?

26

What is the number of protons in this atom?

Protons + Neutrons

What makes up the nucleus of an atom?

electron cloud

Where are the electrons located in the atom?

Above the element's symbol

Where do you find the atomic number?

Neutrons

Which of the parts of an atom have no charge?

proton, neutron, electron

parts of an atom

boron-11 isotope

protons = 5 neutrons = 6 electrons = 5

Neutral atoms contain equal numbers of

protons and electrons

Nucleus

the positively charged center of an atom

Vanadium atom

23 protons, 23 electrons, 28 neutrons

Iron atom

26 protons, 26 electrons, 30 neutrons

Selenium atom

34 protons, 34 electrons, 45 neutrons

Cesium atom

55 protons, 55 electrons, 78 neutrons

Carbon-14 has 8 neutrons. What is the atomic number of carbon-14?

6

Lead atom

82 protons, 82 electrons, 125 neutrons

Fluorine Atom

9 protons, 9 electrons, 10 neutrons

Neutron

A subatomic particle that has NO charge and is found in the nucleus of an atom

Electron

A subatomic particle that has a negative charge

Proton

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Isotope

Atoms of the same element that have different numbers of neutrons

Atom

Building blocks of matter

Carbon, Oxygen, Hydrogen, Nitrogen

Examples of elements

The atomic number

How can you tell the number of protons in an element?

Atomic Mass - # of Protons

How do you find the number of neutrons in a neutral atom?

11

How many electrons does Sodium (Na) have?

2

How many neutrons does Helium element have?

4

How many neutrons does Lithium have?

4

How many neutrons does this element have?

20

How many protons does Calcium (Ca) have?

29

How many protons does copper (Cu) have?

Atom

Makes up all matter, made up of protons, neutrons, and electrons


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