Why were the proton and electron discovered before the neutron
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The _______ of a wave is a measure of the amount of energy it carries
When exercising what happens to the heart rate and blood movement?
A helium nucleus is formed from hydrogen nuclei. What nuclear change has occured? a.) beta decay b.) none c.) alpha decay d.) nuclear fusion​
How are vibrations different between bigger sizes rubber bands and smaller sized rubber bands?
B : nonspecific
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Answer:
specific
Explanation:
a mole represents the amount of grams it takes to have avogadro's number
Answer:
A is your answer
Explanation:
Isaac read 32% of oeople owned dogs what fraction of people owned dogs
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Then, multiply that by the amount of people.
An equation would be,
Hope this helped :)
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Acid-Base Reactions. When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water.
Answer:
It makes salt
Explanation: Hope this helps :)
B. molecules
C. compounds
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The number of electrons in an atom changes when elements combine to form compounds. The molecules are the combination of elements where the number of total electrons increases.
What are compounds?
Compounds are formed by the combination of atoms of different elements. The properties of compounds are different from that of the individual elements which constitutes the compound.
Molecules are the combination of same kind of elements . They are formed through chemical bonding. There are different types of bonding such as covalent bonding, ionic bonding etc.
Isotopes are atoms of same element having different mass numbers. When elements combines through chemical bonding, the number of valence electrons surrounding the atom changes.
To find more on compounds, refer here:
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Answer:
The correct answer is: Alkali Metals
Explanation:
The chemical elements that belong to the group 1 of the periodic table are known as the alkali metals. The alkali metals belong to the s-block and are highly reactive in nature.
The alkali metals are lithium (chemical symbol Li), sodium (chemical symbol Na), potassium (chemical symbol K), rubidium (chemical symbol Rb), caesium (chemical symbol Cs), and francium (chemical symbol Fr).
Therefore, lithium, sodium, potassium are examples of alkali metals.
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The three similarities are hydrogen is produces, metal floats and move around the water, and metal disappeared. The difference is potassium is more reactive than lithium.
What is the reaction of metal with water?
When metal reacts with water, hydrogen and metal hydroxide is produced.
Potassium is more reactive than lithium.
Alkali metals are also reactive with water.
The metal self ignites.
Thus, the three similarities are hydrogen is produces, metal floats and move around the water, and metal disappeared. The difference is potassium is more reactive than lithium.
Learn more about metals
THEY BOTH React violently with water
THEY Both: Give off heat
THEY Both: Give off light
Lithium will float on the water and become engulfed in flame and then die off, and Potassium will become engulfed in flames and then explode.