Answer:fluorine
Explanation:
Based on location in the periodic table, fluorine (F) has chemical properties that are most similar to iodine.
In the periodic table, elements are classified in groups and periods. The elements in the same group are chemically similar and they have the same number of valence electrons. Elements in the same period have the same highest energy level.
Hence, when looking for an element that is most chemically similar to iodine, we have to consider the element that is in the same group with iodine.
Both fluorine are iodine are both in group 17 hence, fluorine is most chemically similar to iodine.
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I will brainless who can answer this all pleaseeeeej
Answer:
False, True, True, False, False, not sure, True, False, True, True
here u go
which of these is chemical property
If you have 10 tasks complete to finish a project‚ how many days will you need to spend working on this course if you spend five days on each task?
A.p.e.x l.e.a.r.n.i.n.g reading skills and strategies
Answer:
Well 50 of course
Explanation:
5 days per tasks is like saying 10 times 5 which is 50.
What caused the water level in the pipe to change when you put the bottle in cold water
Answer:
Water cooled down and contracted.
Explanation:
When water contracts, its volume decreases. When the volume of the water in the bottle system decreases, the water is pulled farther down the clear pipe.
Which of these objects has the properties of a solid?
A.
desk
B.
water
C.
rain
D.
milk
the rays produced in a cathode tube are
Answer:
Electrons
Explanation:
Cathode rays carry electronic currents through the tube. Electrons were first discovered as the constituents of cathode rays. J.J. Thomson used the cathode ray tube to determine that atoms had small negatively charged particles inside of them, which he called “electrons.”
The rays produced in a cathode tube are electrons which are present in the shells surrounding the nucleus of an atom.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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what is the end-product of the beta-amylase reaction?
Answer:
maltose
Explanation:
β-amylase is an enzyme found in fungi, bacteria and plants but not in humans. Unlike α-amylase, β-amylase can only degrade starch from the non-reducing end of the polymer chain by hydrolysis of the second α-1,4 glycosidic bond. The end product is thus maltose, i.e. two glucose units.
Someone pls help me I will make you brain
Answer:
D, radiation
Explanation:
the sun's heat radiates onto the land, oceans, and surrounding atmosphere, warming them
distinguish between the crust and and the lithosphere
Answer:
What is the difference between the crust and lithosphere? The crust (whether continental or oceanic) is the thin layer of distinctive chemical composition overlying the ultramafic upper mantle. ... The lithosphere is the rigid outer layer of the Earth required by plate tectonic theory.
Explanation:
Explain the relationship between primary, secondary, tertiary consumers, and decomposers
Answer:
The organisms that consume the primary producers are herbivores: the primary consumers. Secondary consumers are usually carnivores that eat the primary consumers. Tertiary consumers are carnivores that eat other carnivores.
Which statement best describes a chemical change?
O A. A substance changes size or phase.
O B. Atoms are made and destroyed.
O C. The nuclei of atoms are rearranged.
O D. Substances form new substances.
A student was adding baking soda and vinegar in a bottle. They then put a balloon on top of the bottle immediately after adding them together. The student observed that the balloon inflated and got larger. The student then predicted that the chemical reaction between the vinegar and the baking soda had created brand new matter, and would have more mass at the end of the reaction. Would you agree with the student’s prediction or not? Explain your answer.
Whoever answers my question gets BRAINLIEST!!
Answer:
The prediction of the student about the amount of reactant and product is incorrect.
No, I do not agree with the student’s prediction because the amount of reactant is always equals to the amount of product. According to the Law of Conservation of Mass, mass cannot be created nor destroyed. Therefore in any chemical reaction the mass of the products must equal or same to the mass of the reactants so according to this law, the prediction of the student is incorrect.
Explanation:Give brailiest please
Answer:
The chemical reaction that occurs when vinegar and baking soda (sodium bicarbonate) are combined, creates a gas that is known as carbon dioxide (or CO2). I would agree with the student's prediction because the atoms rearrange themselves to create the product.
Explanation:
Hope this helps! Pls give brainliest!
Arrange the following elements in order of increasing atomic radius.
K, Li, O, Se
Answer:
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30 g of hydrogen reacts with 120 g of oxygen to form water.How much water is produced?
136.9 g of copper sulfide breaks apart into sulfur and 111.6 g of copper.How much sulfur is produced?
According to law of conservation of mass.
In a chemical reaction Mass is neither created nor destroyed.
Mass of product =Mass of reactant#1
Mass of water
[tex]\\ \sf\longmapsto 30+120=150g[/tex]
#2
Mass of sulphur:-
[tex]\\ \sf\longmapsto 136.9-111.6=25.3g[/tex]
Limestral flour (calcium carbonate) is a weak base used for at a few years of intervals Neutralize the acidification that takes place by lakes and woodland. Would not be a good idea that instend Using the stronger base sodium hydroxide and then be able to use a little less amount?
Answer:
Well, no.
Explanation:
NaOH is a base which is found in soap, and other detergents which gives it the slippery feel, because, it is a really strong base. Applying this to lakes and woodland could make the water and woodland really concentrated which could make them harmful for domestic and industrial use
The best way to get the sugar out of a sugar-water solution is to __________.
Answer:
Distillation is the process by which sugar can be separated from the sugar solution.
Explanation:
Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.
Answer:
Boil the water, this would cause the water to evaporate and will leave behind the sugar crystals, which is known as distillation.
10/4/2021
the total number of protons and neutrons in the nucleus
of an atom
a) atomic mass unit
b) mass number
c) atomic number
d) atomic mass
Answer:
atomic number
Explanation:
The colour observed hrainbow during on the lower side of a a sunny rainy day is
Answer:
..
Explanation:
An atom has 21 protons, 24 neutrons, and 18 electrons. Which change will cause the atom to have more negatively charged particles than positively charged particles?
losing two protons
losing four neutrons
gaining three electrons
gaining four electrons
Answer:
ganar tres electrones
Explanation:
Answer:
gaining three electrons
half of the earth is in the light and the other half is in the shadow because
Answer:
the sun doesn't shine on that half
Explanation:
An atom of oxygen (atomic number 8) has a mass number of 17. How many neutrons are
in that atom?
# of neutrons = mass number - atomic number
= 17 - 8
= 9
∴ number of neutrons in an atom of oxygen of mass number 17, is 9.Explain what the force of Gravity on each planet depends on.
Answer:
It depends on the size and mass of the object. Look at Jupiter. It has a higher gravitational pull because it has a higher mass
what is the percent of phosphorus by mass in phosphoric acid h3po4
Explanation:
% phosphorus by mass
= (mass of phosphorus ÷ mass of phosphoric acid) × 100%
= (30.974 g/mol ÷ 97.994 g/mol) × 100%
= 31.61 %∴ percent of phosphorus by mass in phosphoric acid 31.61%.Which element most likely has the same number of valence electrons as silicon (Si)?
O germanium (Ge)
O arsenic (As)
O phosphorus (P)
O sulfur (S)
Answer:
germanium (Ge)
Explanation:
both belong to the same group
Answer:
A. germanium (Ge)
ASAP PLEASE
What are the rules for naming binary compounds that are formed between nonmetals. Are these compounds ionic compounds or covalent compounds, explain why?
Answer:
Explanation:Compounds between Nonmetals and Nonmetals
Compounds that consist of a nonmetal bonded to a nonmetal are commonly known as Molecular Compounds, where the element with the positive oxidation state is written first. In many cases, nonmetals form more than one binary compound, so prefixes are used to distinguish them.
# of Atoms 1 2 3 4 5 6 7 8 9 10
Prefixes Mono- Di- Tri- Tetra- Penta- Hexa- Hepta- Octa- Nona- Deca-
the compounds are covalent, not ionic
PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
coal
iron ore
shale
sandstone
Answer:
sandstone
Explanation:
Answer: iron ore
Explanation: The iron ore deposits are found in sedimentary rocks. They are formed by the chemical reaction of iron and oxygen mixed in the marine and fresh water.
calculate the volume of a box with the following dimensions: length=8 cm
width = 6cm and height = 5 cm
Answer: 240 cm³
Explanation:
Volume of the box = l × w × h
= (8 cm × 6 cm × 5 cm)
= 240 cm³
Read the claim.
Breakfast is an important meal. It jump starts the body’s process of using calories to break down food. Appetite can decrease with age, but going too long without eating causes metabolism to slow down. Current research shows that incorporating legumes such as lentils and chickpeas into meals boosts metabolism for twenty-four hours.
Who might benefit from this claim?
people who have a fast metabolism
stores that sell exercise equipment
people who take vitamin supplements
grocery stores that sell legumes
Answer:
i think people who take vitamins
Answer:
its d;grocery stores sell legumes
Explanation:
I just took the test
help please please please please please
Answer:
wow only six points, you have to amp it up a little
Explanation: because
what conclusions can you draw about how the plasma membrane contributes to the function of the cell as a whole write an evidence based claim. will give brainleist
Answer:
Plasma membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles
Explanation: