Atomic Structure and Caloric Content

Atomic Structure and Caloric Content

Assessment

Interactive Video

Chemistry, Biology, Science

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers several topics: drawing an atom with protons, neutrons, and electrons; understanding valence electrons and the difference between covalent and ionic bonds; calculating the half-life of iodine to determine the age of bones; and calculating the percentage of calories from fat in muffins, comparing it to recommended dietary guidelines.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the atomic number of an element with 5 protons?

20

15

10

5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many valence electrons does an atom with 2 inner shell electrons and 3 outer shell electrons have?

2

3

5

8

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of bond involves the sharing of electrons?

Metallic

Covalent

Ionic

Hydrogen

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it difficult for boron to form ionic bonds?

It has too many protons.

It is a noble gas.

It needs to gain or lose too many electrons.

It has a full outer shell.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a sample originally had 80 grams of iodine and now has 20 grams, how many half-lives have passed?

1

2

3

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How old is a sample if it has gone through two half-lives, each lasting 8 days?

8 days

16 days

24 days

32 days

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many calories are in 24 grams of fat?

288

96

216

144

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