Answer:
A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds.
The mass of a magnesium block that measures 2.5cm x 3.5cm x 1.5cm, the correct answer would be option “B.”
Answers (Based off of my understanding
1.) False, slowing down is decelerating, not accelerating.
2.) True, acceleration is the change in the rate of DISTANCE over time.
3.) True, even though an object is moving, it’s rate of movement is not changing, therefore it is not accelerating.
4.) False, if the plane rose 100mph in 2 hours, 2 / 100 = 50 mph.
5 & 6) Sorry man, can’t see the graphs, if you show them later though I can help you.
The answer is: gas
- First, we have to understand the 4 state of matter:
1) Solids: The molecular or ionic attracts each other by intermolecular forces. They connect with each other by strong convalent bonds that are hard to be broken in normal conditions. The heat energy is used to go through the weak intermolecular forces, So in a normal case, the solids usually have a stable shape.
2) Liquid: Unlike gases, It will take the container shape, and haven't the ability to change its volume to fill a container The intermolecular bonding is helping to give liquid its certain volume. Liquid able to flow and take any shape according to the container shape. The molecules of the liquid are closed together that is why it is hard to compress, the only high pressure will be able to compress it a little.
3)Gases: gases move rapidly in a straight line until it hit an object like the wall of the container then start to move with an aimless direction in a random way called random walk and unlike liquids, it can be compressed.
4) plasma: is unlike the gases, liquid and solid. It does not exist normally on the earth but we have to generate it from neutral gases.It has a neutral charge.
Answer:
d
Explanation:
the carbon is bonded once in a covalent bond