CHEMISTRY MIDDLE SCHOOL

Why is sodium more reactive than magnesium

Answers

Answer 1
Answer:

Answer:

Mg has two valence electrons  

Explanation:

Na has only one valence electron, so it readily donates that electron to other atoms to achieve an octet.

Mg must lose two valence electrons to get an octet. It takes extra energy to remove the second electron. In addition, the two electrons are in a filled s subshell, which has added stability.
Answer 2
Answer: That is because Sodium it is more up in the scale unlike Magnesium. Sodium’s radioactive because it has a lesser number then Magnesium, Sodium has 1 and Magnesium is 2.

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Energy is defined as theA ability to cause change in matter or the capacity to do workB amount of matter in a substancec feree times distance-D distance divided by the time
Aaron is visiting a national park in Pennsylvania. The ranger tells Aaron that he is unlikely to see any groundhogs because it is winter.Which of the following is the most likely reason Aaron would NOT see any groundhogs?The groundhogs are hibernating.The groundhogs migrated.The groundhogs have died out.The groundhogs are gathering food.
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What are five types of chemical weathering

Answers

Carbonation, hydrolysis, hydration, oxidation, and solution.

solution,carbonation,hydration,oxidation,and hydrolysis

What are some examples of Radiation?

Answers

Examples of Everyday Radiation
Non-ionizing Radiation
Visible light
Infrared light
Near ultraviolet light
Microwaves
Low frequency waves
Radio waves
Waves produced by mobile phones
A campfire's heat
Thermal radiation
Extremely low frequency waves (3 - 30 Hz)
Very low frequency waves (3-30 kHz)
Power lines
Strong magnets
MRI
LEDs
Lasers
Light bulbs
Light from the sun
Remote controls
Cordless phones
Radio-frequency radiation such as televisions, FM and AM radio
Shortwave and CB's
Computer screens
Infrared lamps use to maintain food temperature in restaurants
Ionizing Radiation
Ultraviolet light
X-rays
Gamma-rays
Radioactive decay's particles
Cosmic rays
Alpha rays
Beta rays
Medical imaging equipment
Ionization of food
Sterilization of medical tools
Nuclear power production
Metal mining can result in exposure to ionizing radiation
Coal mining and power production from coal
Nuclear weapons
Galactic Cosmic Radiation (to which astronauts are exposed)
Solar Particle Event radiation (to which astronauts may be exposed)
Natural background radiation
Radiation therapy for specific forms of cancer
Radon
CT scans
Nuclear medical scans
X-Rays
Airport security scanners (in extremely high usage)
examples of radiation would be:

ultraviolet light from the sun.

heat from a stove burner.

light from a candle.

x-rays from an x-ray machine.
alpha particles emitted from the radioactive decay of uranium.

Help on both questions please

Answers

the sun makes them turn brown or dry and die
1. This is not a chemical change rather a physical one
2. Not sure which molecules this question refers to but the water molecules in the plant cells evaporate out

explain why lighting a sparkler is considered a spontaneous reaction even though it doesn't stat start spontaneously

Answers

Lighting a sparkler is considered a spontaneous reaction even though it doesn't start spontaneouslybecause it can occur by itself, or without the influence of any external forces once it is given the necessary energy needed for it to begin the reaction. 
The lighting of a sparkler is a common example of a spontaneous reaction which is often given in Science textbooks and exams around the world.

A 'spontaneous reaction' in chemistry refers to a reaction that continues on its own once started, not a reaction that starts spontaneously. A sparkler, once lit, undergoes a combustion reaction that needs no additional energy input.

The term spontaneous reaction in chemistry does not mean that a reaction starts spontaneously without any trigger. It actually refers to a reaction that, once started, continues without any additional external input. In the case of a sparkler, the initial energy to start the reaction is provided by lighting the sparkler. Once lit, the combustion reaction continues on its own, making it a spontaneous reaction.

The reactants in the sparkler (often metal powders and an oxidizing agent) are in a higher energy state than the products (typically metal oxides and heat) they form during burning. This difference in energy drives the reaction forward, making it spontaneous. The overall energy of the system decreases, which aligns with the principle of thermodynamics stating that a spontaneous process leads to a decrease in the system's free energy.

Learn more about Spontaneous Reactions here:

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How can quartzite be distinguished from quartz sandstone? A. The mineral compositions are different.

B. Quartzite is not granular, while sandstone is granular.

C. Quartz sandstone has undergone metamorphism, while quartzite has not.

D. A broken piece of quartzite will break through, not around, quartz sand grains.

Answers

D. A broken piece of quartzite will break through, not around, quartz sand grains.

Quartzite and quartz sandstone have the same chemical formula (SiO_2)

Quartzite is a metamorphic rock. Heat and pressure have compressed the sand into a strong network of interlocking quartz grains.

Quartzite is so tough that it breaks through the sand grains rather than around them as in sandstone.

Answer:

D. A broken piece of quartzite will break through, not around, quartz sand grains

Explanation:

:)

What are some physical properties in a water hat?

Answers

Use Socratic for helps
Physical properties. O; one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. Water is a tasteless, odorless liquid at ambient temperature and pressure. Liquid water has weak absorption bands at wavelengths of around 750 nm which cause it to appear to have a blue colour.

Now, gimme brainliest
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