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Worksheetschemical bonds
Total questions: 25
Worksheet time: 15mins
A _________ __________ is formed when atoms gain, lose or share electrons.
Double ion
Chemical record
Chemical bond
Single element
An atom that has gained or lost electrons is called a(n)_____.
Ion
Isotope
Metalloid
Element
Why are some elements more stable on their own while others are more stable in compounds?
Some elements can never be stable.
2 elements are always better than 1.
It depends on how many valence electrons they have. They want 8 total.
It depends on how many protons they have.
What is the term used to describe a bond where electrons are attracted to one atom more than the other?
Non-polar covalent bond
Polar covalent bond
Ionic bond
Metallic bond
What is the main reason why atoms form chemical bonds?
To reduce overall energy
To increase overall energy
To attract more electrons
To repel other atoms
How many valence electrons?
2
3
4
5
Why do elements bond?
To be friends
To create a new element
To become stable
To get bigger
The electrons that are lost, gained, or shared in chemical bonds are called ________________.
valence electrons
chemical electrons
Lewis electrons
none of the above
Which element is likely to gain electrons in a chemical reaction?
Kr
K
Br
Ca
If an atom gains an electron, what charge will it have?
positive
negative
neutral
What is the difference between elements and compounds?
they are the same
elements make up compounds
compounds make up elements
compounds are made of the same type of atoms while elements are mad up of two or more types of atoms
Sodium is a......
Reactive grey metal
Smelly gas
odorless gas
Non reactive metal
