What is the main focus of this video tutorial?

Understanding Calcium Ions and Electrons

Interactive Video
•
Chemistry
•
9th - 10th Grade
•
Hard

Mia Campbell
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Understanding the periodic table
Finding the number of neutrons in Ca2+ ions
Learning about chemical reactions
Calculating the number of protons and electrons in Ca2+ ions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the atomic number of an element represent?
The atomic mass
The number of protons
The number of electrons
The number of neutrons
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many protons does neutral calcium have?
18
24
20
22
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key difference between neutral calcium and Ca2+ ions?
The number of protons
The number of electrons
The number of neutrons
The atomic mass
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many electrons does a Ca2+ ion have?
22
20
18
16
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to an atom when it loses an electron?
It gains a proton
It becomes a positive ion
It becomes a negative ion
It remains neutral
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does a Ca2+ ion have fewer electrons than neutral calcium?
It loses electrons
It gains electrons
It gains protons
It loses protons
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What charge does an atom have after losing two electrons?
1+
Neutral
2-
2+
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result when an atom gains an electron?
It becomes a negative ion
It becomes neutral
It loses a proton
It becomes a positive ion
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