Science Exam Flashcards
Atoms of all elements contain what three particles 
Protons, neutrons and electrons 
What type of charge does a neutron have? 
Neutral
What type of charge does an electron have? 
Negative 
What type of charge does a proton have?
Positive
What two particles are found within the nucleus
Protons and neutrons
What does the atomic number represent? Where is it found?
The number of protons in the element 
What does the atomic mass represent? Where is it found?
Protons + neutrons 
The physical properties of an element describe what six things 
Color shape, size harness mass and melting point 
What is the chemical properties of an element described?

 how is substance reacts with other types of matter
What is the limit of electrons in the first level closest to the nucleus? 
Two
The fourth state of matter is
Plasma
What is an example of plasma?
Lightning
Why do welders wear protective gear?
To protect their eyes and skin 
What is the name of the early device that showed the changes in temperature? 
The thermoscope 
Who invented the thermoscope? 
Galileo Galilei
What did Daniel Fahrenheit initially create?
 a mercury thermoscope
With the Fahrenheit scale, what temperature does water freeze? Water boils?
It freezes at 32°, and Boyles at 112° 
What did Andreas Celsius create? 
Celsius scale 
With the Celsius scale, what temperature does water freeze? Water boils?
It freezes at 0°, in Boyles at 100° 
Sarah, William Thompson, a.k.a. Lord Kevin designed what scale 
The absolute zero scale 
Name the three philosophers who helped formulate the laws of motion
Galo, Newton in Aristotle 
What is newton’s first law of motion? 
An object at rest tends to stay at rest and an object in motion tends to stay in motion, unless acted upon by an outside force 
What is newtons second law of motion 
force is the mass of the object multiplied by acceleration 
What is newtons third law of motion?
For every action there’s an equal and opposite reaction
What does interior of an object depend on? 
Mass
Name the two ways to describe the movement of an object
Speed and velocity 
What is the mathematical formula to calculate speed? 
Speed equals distance / time 
What is velocity? 
The measure of an object, speed, and direction 
What is acceleration?
 The change in an objects velocity over a period of time 
What is the mathematical formula to calculate acceleration?
Speed equals distance /  time 
Does water have high or low heat capacity?
High heat capacity
Name the three ocean water movements 
Tides, waves, and currents