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Atoms and Reactivity Review

Atoms and Reactivity Review

Assessment

Presentation

•

Science

•

7th - 8th Grade

•

Medium

•
NGSS
MS-PS1-1, MS-PS1-5, MS-PS2-3

+1

Standards-aligned

Created by

Dominick Virola

Used 3+ times

FREE Resource

19 Slides • 12 Questions

1

Atoms and Reactivity

by Mr. Virola & Ms. Scott

2

Multiple Choice

What is Matter?

1

anything that has mass

2

anything that takes up space

3

anything that has mass and takes up space

3

4

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5

Multiple Choice

Question image

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

1

proton

2

neutron

3

electron

4

atom

6

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​WHAT ELEMENTS ARE IN YOUR BODY?

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11

The nucleus

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

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14

Multiple Choice

Question image

Protons have a _________________ charge.

1

negative

2

surface

3

positive

4

neutral

15

Protons, Neutrons, and Electrons:

  • Protons and neutrons have mass.

  • Electrons don't have mass.

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16

Electron Cloud

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


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17

Multiple Choice

Electrons have a ______________ charge.

1

neutral

2

negative

3

positive

4

surface

18

Multiple Choice

Neutrons have a ______________ charge.

1

neutral

2

surface

3

positive

4

negative

19

Multiple Choice

True or False? Neutrons have a negative charge

1

True

2

False

20

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.

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21

Multiple Choice

Question image

How many valence electrons in this diagram:

1

1

2

3

3

5

4

7

22

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)

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Multiple Choice

Which atom is the most reactive?

1
2

24

Multiple Choice

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

1

protons

2

neutrons

3

particles

4

elements

25

Multiple Choice

There are the same number of _________ in an atom.

1

protons and electrons

2

electrons and neutrons

3

protons and neutrons

4

protons and particles

26

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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

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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

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30

Multiple Choice

Question image

All of the elements known are found on the _________.

1

head of a pin

2

inside of an atom

3

surface of the earth

4

Periodic Table of the Elements

31

Multiple Choice

Question image

How many protons?

1

16

2

32.065

3

32

Atoms and Reactivity

by Mr. Virola & Ms. Scott

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