Atoms and Reactivity Review

Atoms and Reactivity

by Mr. Virola & Ms. Scott

Multiple Choice

What is Matter?

• anything that has mass

• anything that takes up space

• anything that has mass and takes up space

Multiple Choice

The smallest particle into which an element can be divided and still be the same element is a(n)

• proton

• neutron

• electron

• atom

​WHAT ELEMENTS ARE IN YOUR BODY?

The nucleus

the nucleus will have an overall charge of +1 because protons are positive and neutrons are neutral

Multiple Choice

Protons have a _________________ charge.

• negative

• surface

• positive

• neutral

Protons, Neutrons, and Electrons:

• Protons and neutrons have mass.

• Electrons don't have mass.

Electron Cloud

• if the electrons are the only particles found in the electron cloud, the cloud will have an overall charge of -1

• 
  

Multiple Choice

Electrons have a ______________ charge.

• neutral

• negative

• positive

• surface

Multiple Choice

Neutrons have a ______________ charge.

• neutral

• surface

• positive

• negative

Multiple Choice

True or False? Neutrons have a negative charge

• True

• False

Valence Electrons

Electrons on the outter shell are called "valence electrons."

The first shell can hold 2 electrons.

The 2nd shell can hold 8 electrons.

The 3rd shell can hold 8 electrons.

Multiple Choice

How many valence electrons in this diagram:

• 1

• 3

• 5

• 7

Reactivity

• The noble gasses (group 18) are non-reactive.

• Group 1 and 17 are the most reactive.

• If the atom has 1 valence electron it is easily lost and reacts easily (group 1)

• If the atom has 7 valence electrons it wants to grab 1 more and reacts easily (group 17)

Multiple Choice

Which atom is the most reactive?

Multiple Choice

The amount of _________ an atom has determines the name of the element.

• protons

• neutrons

• particles

• elements

Multiple Choice

There are the same number of _________ in an atom.

• protons and electrons

• electrons and neutrons

• protons and neutrons

• protons and particles

What's an element?

• An atom is the smallest unit of a chemical element.

• That is, an atom has all the properties of that element.

• All atoms of the same element have the same number of protons.

• An elements atomic number tells us how many protons the element has

Chemical Element

• Atomic number- tells the number of protons, electrons and the location of the element on the Periodic Table

• Atomic Mass- the sum of the protons and neutrons in the nucleus of the atom

• To find the number of neutrons, subtract the atomic number from the atomic mass

• APE MAN

Multiple Choice

All of the elements known are found on the _________.

• head of a pin

• inside of an atom

• surface of the earth

• Periodic Table of the Elements

Multiple Choice

How many protons?

• 16

• 32.065

• 32