Students are each given a 20-gram sample of an unknown solid compound in a clear plastic bag. They are instructed to break the material into smaller parts by gently hitting it with a hammer. Some of the parts break into large chunks and some look like a fine powder.

Answers

Answer 1

What is the question you are trying to ask?

Answer 2
Make sure you finish the question next time look for key words and circle them and circle the numbers so it helps you after you read the question

Related Questions

BRAINLIEST! Are fish mammals

Answers

Answer:

No

Explanation:

Fishes lay eggs and are not warm blooded vertebrates and don't have hair or fur

Answer:

No fish are not mammals.

Explanation:

There are 75 species of dolphins,whales and other creatures living in the ocean. they are the only mammals.

Which statement about lunar eclipses is false?
Select one:
a. They occur at least twice a year.
b. They cause the moon to disappear completely.
c. They can be seen from any place with a view of the moon.
d. They may last for hours.

Answers

Answer:

B

Explanation:

The moon won't completely disappear, but it will be cast in an eerie darkness the makes it easy to miss if you were not looking for the eclipse.

Geologists, more specifically mineralogists, identify minerals based on ________. A. Optical properties. B. Solid properties. C. Behavioral properties. D. Physical properties.

Answers

The minerals are mostly characterized by the Physical properties (D) which includes the hardness, lustre, density etc. The mineralogists check the detailed view of minerals by using high powered microscope.

The minerals are chemical compounds which are formed as a result of physical processes or geological processes. They mostly occur in crystalline form. For Example: Cacite, Sulfur, Quartz etc[tex].[/tex]

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what are the 3 basic components of a nucleic acid

Answers

Answer:

The term nucleic acid is the overall name for DNA and RNA. They are composed of nucleotides, which are the monomers made of three components: a 5-carbon sugar, a phosphate group and a nitrogenous base.

PLEASE HELP ME THIS IS DUE TODAY

what are the reasons for each statement?

(A) a piece of wood is not a living thing
(B) all organisms need to respire
(C) a snake is not an invertebrate
(D) A bat is a vertebrate
(E) A Mushroom is not a plant
(F) A carrot is a plant
(G) All living things need to feed
(H) All bacteria aremicroscopic organisms
(I) A virus is not a living thing

Answers

Answer:

a) A piece of wood is not alive because, once it is not part of a tree, it cannot use the energy from sunlight to grow, produce seeds, and make more pieces of wood.

Find the median for this set of data.
10.2.
6.8
5.4
3.7
9.3

Answers

Answer:

6.8

Explanation:

least to greatest.

3.7 5.4 6.8 9.3 10.2

if there is an even number  in the data set  then the median is found by the mean of the two middle most.

but since it is an odd data set it is 6.8

HOPE THIS HELPS!

Hummingbirds can hover in midair by flapping their wings 15-80 times per second depending on the species. Which organelle would you find an abundance of in the muscles of their wings?

Answers

Answer:

Mitochondria

Explanation:

This vigorous activity is powered by organelles known as mitochondria.

Ecosystem services are services that are supplied by humans for the environment.
O a. True
O b. False

Answers

Im going for false , because ecosystem service supply humans not humans supplying the ecosystem

What is the smallest or most specific level of organisation you and your neighbors all have in common

Answers

Answer: The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.

Explanation:

Answer:population

Explanation: I got it right

It has been stated that almost all energy used by organisms can be tracked back to the sun. How is this possible since some organisms are never exposed to sun.

Answers

Plants get energy from the sun using photosynthesis. Then organisms such as caterpillars and other organisms eat the plants and get energy from it. This chain keeps on going and going

Which option correctly describes the role of the nucleus in the cell?

The nucleus controls the making of proteins.
The nucleus controls the storage of food and water.
The nucleus controls the production of energy within the cell.
The nucleus controls the breakdown of old cell parts.

Answers

Functions of the nucleus:

control of the genetical information of the cell and the heredity characteristics of an organism

control of the protein and enzyme synthesis

control of cell division and cell growth

storage of DNA, RNA and ribosome

regulation of the transcription of the mRNA to protein

production of ribosomes

Answer: The nucleus controls the making of proteins.

which type of molecule can be found in living things lacks carbon atoms

Answers

Answer:

Water.

Explanation:

Answer:

H2O

Explanation:

which is an example of kinect energy​

Answers

Answer:

A

Explanation:

Kinetic energy is the energy of mass in motion, a skateboard rolling across the street is moving, therefore it has kinetic energy.

Answer:

A: a skateboard rolling across the street

Fructose is a sugar molecule that is similar to glucose. It moves from a high concentration outside the cell to a low concentration inside the cell. How would fructose enter a cell?
passive diffusion
osmosis
facilitated diffusion
active transport

Answers

Answer:

facilitated diffusion

Explanation:

i just got it right

Answer:

The correct answer to this question is facilitated diffusion

Explanation:

how is the hammer structure related to its function

Answers

Answer:

hope it helps you..

Explanation:

Structure to Function Relationship:

The length of the handle allows for a swing that increases the speed of the head of the hammer. The head is composed of hard metal. When the head hits the nail, the metal transmits the force of the swinging hammer into the nail, driving it into the wood .

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Which of the following structures are present in plant cells but absent in animal cells?

Choose 1 answer:

(Choice A)
A
Cytosol

(Choice B)
B
Mitochondria

(Choice C)
C
Cell walls

(Choice D)
D
Golgi bodies

Answers

Answer:

C

Explanation:

The cell wall in only present in plant cells, not animal cells. Hence, the fact that plant cells are rectangular while animal cells are more circular.

The answer is C. Animal cells do not have a cell wall, only plant cells do.

what are the SI units of measurement (in science)

Answers

Answer:

The units and their physical quantities are the second for time, the metre for measurement of length, the kilogram for mass, the ampere for electric current, the kelvin for temperature, the mole for amount of substance, and the candela for luminous intensity.

Answer:

in 1960 ad an international convention of metrologist suggested a same unit all over world called Si unit

Hydroponics is defined as the practice of growing plants without soil used to provide support or nutrients or ‘Soilless Farming'. How is ‘Hydroponics' an effective method of farming in arid and dry zones other Earth?

Answers

Answer:

Hydroponics solves the problem of unavailability of water in those arid and dry regions

Explanation:

As rightly stated in the question, hydroponics is a practice that involves the culturing of plants without the need for soil. Hydroponics procedure make use of a moisture-containing solution filled with nutrients.

This procedure of hydroponics, however, comes with some disadvantages but one major effectiveness it has in arid or dry regions is that it SOLVES THE PROBLEM OF WATER UNAVAILABILITY. When it comes to farming practice using soil, constant water supply is an unnegotiable criterion because water is needed for the growth of plants in the soil.

However, in arid regions, which are usually very dry due to lack of rainfall, the practice of hydroponics can substitute for soil farming in order not to cause food scarcity.

What is the name of the group of proteins that can speed up the process or reduce the activation energy of a reaction? a) enzymes b) lipids O c) ions d) vitamins Please help me​

Answers

Answer:

The answer is a) enzymes

Enzymes is the answer!:)

Describe the stage of the cell cycle that takes place before mitosis.

The _____ stage occurs before mitosis. In this stage extra sub-______ structures are produced.

Answers

The interphase stage occurs before mitosis. In this stage, extra sub-phases like G1, S, and G2 are produced various proteins necessary for divisions.

What do you mean by Cell cycle?

The Cell cycle may be defined as the process a cell goes through each time it divides.

Interphase is the initial stage of any cell cycle which is the interval between the end of one mitotic or meiotic division and the beginning of another. It is the longest phase of the cell cycle as compared to the mitotic phase.

Therefore, the interphase stage occurs before mitosis. In this stage, extra sub-phases like G1, S, and G2 are produced various proteins necessary for divisions.

To learn more about the Cell cycle, refer to the link:

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Answer: The Growth stage occurs before mitosis. In this stage extra sub-cellular structures are produced.

A very thin slice is removed from a peanut and treated with Sudan III, another indicator that turns red in the presence of a lipid. Then the same slice is treated with Biurets reagent. When the peanut is examined under a microscope, little patches of red and blue-violet can be seen. What conclusions can be drawn from this examination? Why would you expect this result?

Answers

Answer:

Little patches

Explanation:

blue- violet

Little patches and blue- violet.

What is Little patches?

Sudan III is a bis(azo) chemical that has a 4-[(2 methylphenyl)diazenyl]phenyldiazenyl group replaced at position 1 of the 2-naphthol ring. a fat-soluble dye that can stain some protein-bound lipids in paraffin sections and is mostly used to show triglycerides in frozen sections.

It functions as a histology dye, a fluorochrome, and a carcinogen. It belongs to the class of azobenzenes, is a bis(azo) chemical, and is a naphthol. It is similar to a 2-naphthol in terms of function.

"It certainly does not mean, as many writers have assumed, that the lipid in question belongs to the carbohydrate-containing glycolipid (cerebroside) group.

Therefore, Little patches and blue- violet.

To learn more about Little patches, refer to the link:

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ANSWER QUICK PLS!!!
What is the purpose of greenhouse gases?

Answers

Answer:

Image result for what is the purpose of greenhouse gases

Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO2) and methane (CH4), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place.

Explanation:

Answer:

Greenhouse gases are certain molecules in the air that have the ability to trap heat in the Earth's atmosphere. Some greenhouse gases, like carbon dioxide (CO2) and methane (CH4), occur naturally and play an important role in Earth's climate. If they didn't exist, the planet would be a much colder place.

Explanation:

Hope This Will Helpp

11.
Which of these best represents a fatty-acid molecule?
H
H-C-OH
U-I
H
Η Η Η Η Η Η Η Η Η
IIIIIIIII
C-c-c-c-c-c-c-c-cc-H
IIIIIII
н нннннннн
F
H
HOCH
H-C-OH
IO-U-I
IO-O-I
HN-H

Answers

Answer:

F. Is fatty acid molecule.

Explanation:

It's unsaturated fatty acid.

Fatty acid consists of a straight chain of an even number of carbon atoms, with hydrogen atoms along the length of the chain and at one end of the chain and a carboxyl group (―COOH) at the other end.

It is that carboxyl group that makes it an acid (carboxylic acid).

i believe it would be F

What are the Characteristics of a good hypothesis

Answers

Should be formatted as “IF I change *independent variable* THEN *what you think will happen and WHY*

Which of the following is true about the action of enzymes? *
the binding of the substrate denatures the enzyme
O substrates bind at a site remote from the active site
the binding of a substrate changes the shape of the active site so the reaction can
occur
enzymes increase the energy required to initiate the reaction

Answers

Answer:

enzymes increase the energy required to initiate the reaction

Explanation:

classify each of the following as a stimulus or a response

a._____ the recess bell ringing in an elementary school

b._____ your mouth watering at the sight of food on a plate

c._____ a sudden drop in air temperature

d._____ a flu virus entering your body

e._____ getting “butterflies” in your stomach before giving a speech

Answers

Answer:

A- Stimulus

B- response

C- Stimulus

D- Stimulus

E- Response

Explanation:

Stimuli are what cause responses.

Which term best describes the temperature and weather conditions of an organism’s environment? biotic factors abiotic factors natural resources natural habitat

Answers

Explanation:

Abiotic factor is the correct one.

Answer:

Abiotic factors.

Explanation:

Got it right on Edge :]

Volleyball season is right around the corner and I think I need to make sure I am healthy and I want to lose some weight. I keep seeing these commercials for Special K cereal and if you eat it for 2 weeks, you will lose 10 pounds. I want to test this idea and see if it actually works. I plan on eating whatever I want for the next two weeks and am going to track my weight every morning. Then I will eat nothing but Special K cereal, milk and water for two weeks and track my weight in the morning. What do you think my hypothesis should be? What will my variables be? Hypothesis: Independent variable: Dependent Variable:

Answers

Answer:

Hypothesis: If you eat Special K cereal for 2 weeks, you will lose 10 pounds.

Independent variable: Special K cereal.

Dependent Variable: Weight lose.

Explanation:

Hypothesis: The term "hypothesis" is determined as a testable and a precise statement of what a specific researcher or experimenter predicts would be considers as the outcome of a particular study.

Independent variable: In research, the term "independent variable" is determined as a variable that is being re-organized in an experiment or research in order to see its impact on the dependent variable. Independent variable influences the dependent variable directly. 

Dependent variable: The term "dependent variable" is determined as a variable that is being measured or tested in an experiment or research by the experimenter or researcher and is directly influenced by the independent variable.

The Calvin cycle takes place in the stroma. What happens in the thylakoid
membranes?
thylakoid
stroma
grana
O A. The Krebs cycle
O B. All of photosynthesis
O C. Light reactions of photosynthesis
D. Dark reactions of photosynthesis

Answers

Answer:

B

Explanation:

I think so ................

Light reaction of photosynthesis takes place in the thylakoid membrane. The correct option is C.

What is chloroplast?

Chloroplast is a cell organelle that contains chlorophyll, and is the place of photosynthesis. It is present in only photosynthetic organisms.

Integral membrane proteins in thylakoid membranes play an important role in light harvesting and photosynthesis's light-dependent reactions.

Thus, the correct option is C.

For more details regarding thylakoid membranes, visit:

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All organelles float around in the _________________.

Answers

Answer:

The answer is cytoplasm.

cytoplasm

Explanation:

because its in the cell and its the main part of everything floating

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