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1st sem vocab mmjh 3

1st semester vocabulary

QuestionAnswer
What should you wear when working with chemicals? Goggles
What piece of equipment is used to protect your hands? Gloves
What piece of equipment should you use for protecting you clothes and body? An apron
What is the formula for density? D=M/V
What should you do when sniffing chemicals? "Waft with me! Waft with me!"
What are the 5 different signs of a chemical equation? Color change, temperature change, gas produced, light produced, or a solid precipitate.
What are the three parts to an atom and what are their charges? Protons = + Neutrons = 0 Electrons = -
How is a periodic table organized? By atomic number.
How do you balance a chemical equation? By seeing if the numbers add up and if not, you mess with the coefficients until it is equal. (unless it is impossible)
If nothing changes the substance besides it appearance the it is called a........ ......physical change.
What is a net force? The combination of forces upon an object, but it can never be a negative.
What are Newton's three laws? 1st- An object (at rest/in motion) will stay (at rest/in motion) unless acted upon by an unbalanced force. 2nd- The acceleration of an object is dependent on it's mass. 3rd- Every action has an equal and opposite reaction.
What is the formula for speed? Speed= Distance/ Time.
What is the difference between speed and acceleration graphs? Acceleration calculates speed and time while speed graphs calculates distance and time.
Who invented the 3 laws of motion? Sir Isaac Newton.
What's a comet made of? Rock, ice, and dust.
What are the final stages for a small sequence star? White/ Black Dwarf.
What are the final stages of large sequence stars? A neutron star or a black hole?
Which area in the main sequence stars is the sun located? The small or normal sized stars.
What are the Types of radio waves? How many? 1.Radio 2.Microwave 3.Infrared 4.Vision 5.Ultra Violet 6.X-Ray 7. Gamma.
Created by: b0403518
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