States of Matter
What are the 3 states of matter covered in class?
Solid, Liquid, and Gas
True or false?
Phase changes occur because of a change in temperature and kinetic energy
True
Write the charge for each subatomic particle.
Proton -
Neutron -
Electron -
Protons: +
Neutrons: 0
Electrons: -
1. between a metal and a nonmetal
2. electrons are permanently transferred
True or False:
The ocean contains 20 million tons of gold.
True
True or False:
The particles in a solid do not move at all.
False - they vibrate in place
What phase change is happens when water boils?
Evaporation
How many protons, neutrons, electrons, and valence electrons are in Potassium (K)
Protons: 19
Neutrons: 20
Electrons: 19
Valence Electrons: 1
1. between two nonmetals
2. electrons are shared
Can astronauts burp in space?
No! Because the constant of gravity is different in space, the liquids, gasses, and solids in your stomach do not separate like they do on earth.
This state of matter does not have a fixed shape or volume.
Gas
Is condensation an example of an endothermic or exothermic change?
Exothermic
How many protons, neutrons, and electrons, and valence electrons are in Xenon (Xe)
Protons: 54
Neutrons: 77
Electrons: 54
Valence Electrons: 8
What is the charge of a Calcium (Ca) ion?
+2
What is the only bird that can fly backwards and upside down?
Hummingbirds
Describe the relationship between temperature and kinetic energy.
Higher temperatures = more kinetic energy
Name an example of an endothermic change.
answers with vary
Why are noble gases unique?
Their valence electrons have 8 electrons and do not easily bond with other elements.
Is this ionic or covalent? C₆H₁₂O₆
Covalent
How many bones do human babies have?
300
Describe the particles in the 3 states of matter covered in class.
Solids: particles are in a fixed, condensed position and vibrate in place
Liquids: particles are more spread out, have higher kinetic energy than solids, and flow
Gas: particles move freely and quickly and have a lot of kinetic energy
Describe what happens to the particles and the temperature when ice turns to water.
particles gain kinetic energy as they absorb heat from their surroundings (endothermic reaction) and spread out more
Draw an atomic diagram for Magnesium (Mg)
include protons, neutrons, and all electron shells
answers vary
Draw a bond diagram for Aluminum (Al) and Chlorine (Cl).
You can draw an electron dot diagram or draw only the valence shell.
get your answer checked
How long is one day on Neptune?
16 hours