I need these ASAP Thank you c:1) The outer electrons in an element are referred to as _____.
A) valence electrons
B) ground state electrons
C) excited electrons
D) none of the above
2)In an exothermic reaction, the products have _____.
A) more energy than the reactants
B) less energy than the reactants
C) the same amount of energy as the reactants
3)A static charge is different from an electric current, in that a static charge _____.
A) is a flow of electrons
B) lasts only for a fraction of a second
C) occurs because a force is exerted on the electrons
D) involves the movement of ions as well as electrons
4)The time that it takes for a wave to travel one wavelength is considered a(n) _____.
A) period
B) velocity
C) amplitude
D) rarefaction
(This is for Integrated Physics and Chemisty)
Answers
1.
Answer:
A) valence electrons
Explanation:
outer shell electrons used to participate in formation of bonding because when two atoms comes close to each other then these outer shell electrons interact with each other and hence bond will form between the atoms.
So correct answer will be
A) Valence Electrons
2.
Answer:
More energy than reactants
Explanation:
Here products will have more energy than reactants due to which overall the energy is released and hence we get some energy along with the products in such type of reactions.
3.
Answer:
C) occurs because a force is exerted on the electrons
Explanation:
Static charge will remains at rest because of the the force that makes them in stationary condition.
4.
Answer:
A) Period
Explanation:
One time period is the total time for which a one complete wavelength distance is traveled by the wave.
2.B) less energy than the reactants
3.C) occurs because there is a force exerted on the ions
4.A) period
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Answers
Just remember it as pitch.
Answers
b. Mars and Jupiter.
c. Jupiter and Neptune.
d. Mars and Earth.
Answers
Answer:
b. Mars and Jupiter.
Explanation:
Asteroids are irregular sized and shaped rocky bodies -very small as compared to a planet which revolve around the sun in elliptical orbit. In the solar system, majority of the asteroids can be found in the asteroid belt which lies between the orbits of Mars and Jupiter. It is thought to be the debris of an unformed planet due to large gravity of Jupiter. Examples of asteroids - Ceres, Vesta, Eros etc.
Answers
Answer: The given statement is False.
Explanation:
Potential energy is defined as the energy possessed due to the height of the object.
Mathematically,
where,
= potential energy of the rock
m = mass of the rock
g = acceleration due to gravity =
h = height of the cliff from where the rock is thrown
- When height of the cliff is 200 m
Putting values in above equation, we get:
- When height of the cliff is 600 m
Putting values in above equation, we get:
So,
Potential energy of the rock at 600-m high cliff is more than the potential energy of the rock at 200-m high cliff
Hence, the given statement is False.
Answers
Answer:
Elements of weather
Explanation:
Weather can be defined as the atmospheric conditions of a particular area over a short period of time.
Air pressure, humidity, clouds and temperature are all called elements of weather. The other elements of weather are;
- Wind
- Precipitation.
Air pressure, humidity, clouds, and temperature are all part of weather and climate studies. They represent the weight of air above a point on the earth's surface, the amount of water vapor in the atmosphere, collections of airborne water droplets or ice crystals, and the heat energy in the atmosphere, respectively.
Air pressure, humidity, clouds, and temperature are all components of weather and climate studies, key elements of geography and meteorology. Air pressure is the force exerted by the weight of air above any given point on Earth's surface. Humidity refers to the amount of water vapor in the atmosphere. Clouds are collections of water droplets or ice crystals that form in the Earth's atmosphere when water vapor condenses. Temperature is a measure of the amount of heat energy in the atmosphere, usually expressed in degrees Celsius or Fahrenheit. The combination of all these factors form different weather patterns and influence the Earth's overall climate.
Learn more about Weather and Climate Components here:
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