
Atoms and Elements
Presentation
•
Chemistry
•
9th Grade
•
Hard
Joseph Anderson
FREE Resource
21 Slides • 16 Questions
1
Unit 1: Matter, Atoms, and the Periodic Table
2
What will you learn today?
Goals:
Define the study of chemistry
Understand the structure of an atom
Begin to read a periodic table
Understand the differences in elements, compounds and mixtures
Begin to understand how chemical bonds work
3
Anything that takes up space and has mass.
What is Matter?
The simplest form of matter with its own unique set of properties, it cannot be broken down into any simpler substances
What is an Element?
4
5
6
7
8
9
Elements are made of Atoms:
And atom is the smallest unit of an element that will retain the unique properties of the element.
What are Elements made of?
10
subatomic particles
Protons, Neutrons and Electrons
Every atom of the same element is identical
Atoms are made of...
11
12
13
14
Multiple Choice
What are the subatomic particles?
Protons, Electrons, Neutrons
Molecules, and atoms
Electrons, Protons, Nucleus
Nucleus, and Electrons
15
Multiple Choice
What is this subatomic particle that has positive charge?
Electron
Neutron
Proton
Megatron
16
Multiple Choice
What is the smallest unit of matter? It is composed of protons and neutrons, held together in the nucleus, and electrons around the nucleus in different electron orbitals, which form an electron cloud.
cell
nucleus
atom
electron
17
Multiple Choice
What mass does a neutron have?
1 amu
0 amu
-1 amu
+2 amu
18
Multiple Choice
19
Multiple Choice
20
Multiple Choice
The electron is not included in the calculations for the atomic mass because
It has negative charge
It is located in the outer energy levels of the atom
Its mass is basically zero
It attracts neutral particles
21
Multiple Choice
An atom has 9 protons, 10 neutrons, and 9 electrons.
What is the charge on this atom?
-1
0
+1
19
18
22
Multiple Choice
An atom has 8 protons, 8 neutrons, and 10 electrons.
What is the mass of this atom?
8
16
18
-2
23
24
25
26
27
28
29
Multiple Choice
What is the name of this element?
Na
periodic table
sodium
30
Multiple Choice
What is the atomic symbol of this element?
Na
11
sodium
31
Multiple Choice
What is the atomic number of this element?
22.990
11
sodium
Na
32
Multiple Choice
How many protons does Sodium have?
22.990
11
33
Multiple Choice
If this is a neutral atom, how many electrons does Sodium have?
22.990
11
34
35
36
Multiple Choice
The average number of protons and neutrons is called the-
atomic symbol
atomic mass
atomic number
atom
37
Poll
Which of these do you feel you need more practice?
All of it
I feel good about it
atomic mass and atomic number
atomic symbol and name of the atom
Unit 1: Matter, Atoms, and the Periodic Table
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