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Grinding coffee beans
 
Physical Change
 
Chemical Change
Baking cookies
 
Chemical Change
 
Physical Change
A bar of chocolate melting in the sun
 
Physical Change
 
Chemical Change
Gases created when baking soda and vinegar are mixed
 
Chemical Change
 
Physical Change
Rolling a ball of clay into a long straight line
 
Physical Change
 
Chemical Change
Melting an ice cube to get liquid water
 
Physical Change
 
Chemical Change
The ____________ is an abbreviation for the element's name
symbol
How many electrons are in an atom of silver?
47
How many neutrons are in an atom of gold?
118
What is the atomic mass of lead?
207.2
How many protons does this element have?
7
The second energy level can hold up to how many electrons?
8
Most of the mass in an atom is concentrated in the
 
Nucleus
 
Electron Cloud
 
Protons
 
Empty space
Which statement best describes an electron?
 
Smaller mass than a proton and a negative charge
 
Smaller mass than a proton and a positive charge
 
Greater mass than a proton and a negative charge
 
Greater mass than a proton and a positive charge
Sodium has 11 neutrons, 12 protons, and 11 electrons. What is its mass?
23
A neutral atom of lead has 82 protons, how many electrons does it have?
82
An atom of chlorine has 17 protons and 18 neutrons, what is its atomic mass?
35
If an atom has an atomic number of 16, how many protons does it have?
16
If an atom has an atomic number of 8, how many protons does it have?
8
_________ and _________ equal an atom's mass
Protons and Neutrons
The overall charge of an atom is (usually) ________
neutral
Where are electrons found?
Electron cloud
Where are protons and neutrons found?
Nucleus
What type of charge does an electron have?
Negative
What type of charge does a neutron have?
Neutral/no charge
What type of charge does a proton have?
Positive
What do you call anything that has mass and takes up space?
Matter
Neutral particle in an atom
Neutron
Negatively charged particle in an atom
Electron
Positively charged particle in an atom
Proton
All matter is made of _________
atoms
The center of an atom is called the __________
nucleus


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