SECOND SCIENCE WORKSHEET:
Answer the following:
1:
Which type of cell has a cell wall?
2: What is the smallest part of any substance?
3:
What is used to see tiny objects?
4: What name is given to a substance where all the atoms are the
same?
5: What does the safety symbol with flames mean?
6: What gives the ability to do work?
7: Which part of the cell controls all cell activity?
8: By what process does a liquid change to a gas?
I

Answers

Answer 1

Answer:

1 animal cell

2?

3 mircoscope

4?

5 it means whenever you becareful


Related Questions

How do scientist respond to experimental observations that don’t match current theories?

Answers

Answer: The results of the experimental observations should coincide with the facts of the current theories.

Explanation:

The scientific theory can be defined as the well defined as supported explanation for a natural phenomena. It is based upon the facts observed and also supported by the evidences obtained from the experimental trials.

If the experimental observations do not match with the concept of current scientific theory then the scientific either perform the experiment with the same scientific methodology or can switch to another scientific methodology to satisfy the facts of the current theories.

If the solid, liquid, and gas forms of a substance
are made up of the same type of particles, How
could a substance change from one state to
another?

Answers

presence of heat can change solid tu liquid

and liquid to gas

A large rift valley can be found along the east coast of Africa. It has been slowly widening over time, and it is now wide enough to contain many large lakes.
Which of these best explains the slow widening of this rift valley over time?
Group of answer choices

Earth's rotation

wind and water erosion

the Moon's gravitational pull

lithospheric plate movement

Answers

Answer:

wind and water erosion

Answer:

C is the answer

Atoms tend to form compounds because they have an unstable number of ___
A. Protons
B. Isotopes
C. Valence electrons
D.neutrons

Answers

A is the answer you are looking for
A. protons hope this helps


When you have been swimming and you come out of the pool, you may feel cold. Use your understanding of endothermic processes to explain why?​

Answers

Answer:

An endothermic process is any process with an increase in the enthalpy H (or internal energy U) of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.

Identify the following examples as either physical or chemical change.
(Ill give brainliest if right)

Answers

Answer:

19. Physical

20. Physical

21. Chemical

22. Physical

23. Chemical

24. Chemical

25. Physical

Explanation:

CAN U GUYS HELP ME ON THIS ONE PLEAASE IM TOO DUMB YO ANSWER THIS ONE IM NOT EVEN LYING TOO PLUS THIS ASSIGNMENT WAS DUE LAST FRIDAY :(

CH3Br Draw out the work for all 4 steps for the Lewis structure.

Grading Criteria:
a. Correctly count the total valence electrons (2pt)
b. Correctly identify and draw the location of the central atom and surrounding atoms. (2pt)
c. Correctly draw the total amount and location of the electrons on the lewis structure. (2pt) ​

Answers

Answer:

For CH3Br, there are a total of 14 valence electrons. Hydrogen always goes on the outside, and since Carbon is less electronegative than Bromine, we'll put the Carbon in the center and the Bromine on top. We have 14 valence electrons for the CH3Br Lewis structure. Put two between atoms to form chemical bonds.

Explanation:

Which is heavier, calcium or selenium?

Answers

Answer:selenium

Explanation:

Answer: Nether

Explanation: Because if you have one pound of Calcium and one pound of selenium there both the same weight  

science againnnnnn helppp!!!!!

Answers

Answer: this is not my own words :)

Learn how factors, such as exposure to the atmosphere, the composition of rock and climate affect the rate of weathering. Weathering is the mechanical or chemical process by which rocks are broken down. The weathering that happens to rocks can be understood by relating it to the digestion of a chocolate chip cookie

One of the factors that affects the rate of weathering is exposure to the atmosphere. ... Another factor that affects the rate of weathering is the composition of rock. Rocks are composed of minerals, which are solid substances found within rocks that have their own distinct chemical composition.

Which of the following is not likely to occur if a city loses its tax base due to economic decline? A. The city will have fewer police and fire fighters. B. City residents will have adequate health care and hospital services. C. The city will have a decline in public housing. D. Public and private buildings will decay.

Answers

Answer:

B.

City residents will have adequate health care and hospital services.

Explanation:

the correct answer for edg 2020

Answer:

B

Explanation:

What does an oxygen atom do when becoming an ion?

Answers

It gains 2 electrons from another atom so it becomes an anion.

if one species of rabbit, the gene for brown fur ( B) is dominant, while the gene for black fur ( b) is recessive. One rabbit has the dominant allele for brown fur and the recessive allele for black fur. Another rabbit has two recessive alleles. If the two rabbits have offspring, what are the odds of one of the offspring having brown fur?

Answers

Answer:

1/2

Explanation:

According to this question, the gene coding for fur color in rabbits contains two alleles viz: alelle for brown fur ( B) is dominant, while the allele for black fur ( b) is recessive. This means that an heterozygous rabbit (Bb) will have brown fur.

Based on the question, one rabbit has the dominant allele for brown fur and the recessive allele for black fur i.e genotype Bb, another rabbit has two recessive alleles i.e. genotype bb. If these two rabbits cross i.e. Bb × bb, the proportion of the offsprings produces will have Bb, Bb, bb and bb genotype.

Bb is dominant, hence, 1/2 of the offsprings will be brown furred.

one species of rabbit, . the two rabbits have offspring, what are the

aluminum oxide is an ionic substance with formula al2o3. explain what this formula means.

Answers

Answer:

the 2 means there are 2 al and the 3 means there are 3 o

Explanation:

I hope this helps

What particles form the nucleus of an atoms?

Answers

Answer:

Protons and neutrons

Explanation:

The particles to forms the nucleus of an atom are the protons and neutrons of the atoms.

These materials are located in the tiny nucleus and contributes the most mass of the atom.

Protons are the positively charged particles in an atomNeutrons do not carry any charges. Sum of the protons and neutrons gives the mass number of the atom.

Which belief is the basis of Ptolemy's geocentric model of the solar system?

Answers

Answer:

"Earth-centered," or "geocentric" Ptolemy thought that all celestial objects — including the planets, Sun, Moon, and stars — orbited Earth. Earth, in the center of the universe, did not move at all.

Explanation:

Answer:

Geocentric

Explanation:

Its the belief that earth was the center of the solar system instead of the sun

Ian uses litmus paper to determine whether five unknown solutions are acids or bases. The litmus paper turns red when the pH is 4.5 or below and blue when the pH is 8.2 or above. Ian records the results in the data table.

Ian accidentally spills a beaker of an unknown solution. It splashes onto the strip he used to test Solution 1, and the strip turns from red to blue. Based on this observation, which conclusion could Ian make about the solution that he spilled?

Answers

Answer: b

explanation: i had the question on a test and got it right.

What is the order of decreasing reactivity of these 4 metals?

Answers

Answer:

Ca, Mg, Zn, Cu

Explanation:

Refer to the Reactivity Series where each metal is more reactive than others.

A population of panthers lives in the southeastern United States. Over 50 years, the size of the panther population in the region increased. What best explains the increase in the size of the panther population?

Answers

Explanation:

Because the panthers live in the southeastern region of the United states they have increased in population in that region. They have been able to gain more food and have adapted more to there environments. Which allows to increase and reproduce more. That is why the Panthers in the southeastern United states have increased In population.     I hope this works for you and that it helps. I don't mind helping someone who has a question! From, me.

A population of panthers lives in the southeastern United States. Over 50 years, the size of the panther population in the region increased. More panthers were born than died explains the increase in the size of the panther population.

What is the largest panther in the world?

The jaguar, also known as the panther, tigre, or onza, is the world's largest and most powerful cat. Human activities endanger this cat, as they do the Florida panther (Puma concolor).

Because the anteater population will have fewer energy storage molecules available due to the smaller ant population, the anteater population will reproduce less.

Panthers can be found in the southeastern United States. The region's panther population has grown over the last 50 years. Because no animal eats panthers, the panther population is always growing.

Thus, More panthers were born than died explains the increase in the size of the panther population.

To learn  more about the panther, follow the link:

https://brainly.com/question/28060154

#SPJ6

12) A 17.92 g sample of copper was submerged in water, and the volume reading rose by 2.00 mL. What is the density of the copper sample?​

Answers

Hey there!:

Mass = 17.92 g

Volume = 2.00 mL

Density =  ??

Therefore:

D = m / V

D = 17.92 / 2.00

D = 8.96 g/mL

Hope this helps!

The density of an object is obtained as the ratio of mass of an object to its volume.

In science, density is defined as mass per unit volume. The volume of an object is the same as the volume of water displaced by the object.

Since the volume of water rose by 2.00 mL, then the volume of copper is 2.00 mL.

The density is now; mass/volume

Mass = 17.92 g

Density = 17.92 g/2.00 mL

= 8.96 g/ml

Learn more; https://brainly.com/question/24386693

Devin had a bucket of shredded metals the metals consist of aluminum steel and copper he tried sorting the mixture by running it through a filter but this did not sort the mixture into separate components what can devin conclude

Answers

Answer:

Devin's problem can be solved by exploiting the activity series of metals.

Explanation:

This determines what metals are more reactive and would be readily displaced in a reaction.

Seeing as they are both metals scraps of similar sizes, filtration isn't a solution.  But since Copper is lower on the activity series than Aluminium, adding an acidic solution (say tetraoxosulphate VI solution) to the mixture, would have aluminium in solution and Cu as residue which can then be filtered off.

I hope this was helpful.

Calculate the wavelength of radiation with a frequency of 7.13 x 1020 s-1

Answers

Answer:

λ = 4.2x10^-13 m

Explanation:

c = λν

c is speed of light 3x10^8 m/s

λ is wavelength

ν is frequency

3.10^8 = λ . 7.13 × 10^20

λ = 4.2x10^-13 m

What happens during every chemical change?
A. Heat or light is produced.
B. Two substances combine to make a different substance.
C. One type of matter becomes another type of matter.
D. Matter changes from one state to another.
pleaase helpppp

Answers

Answer:

D

Explanation:

ahh i think,

AHH JUST LET ME SEND ITTT

Answer:

its one type of matter becomes another type of matter

Explanation:

it was that for a p e x

what elements are the monomers of proteins made of?

Answers

Answer: Proteins are known as biomolecules and biomolecules are made of the elements Carbon, Hydrogen, Nitrogen, and Oxygen and the monomers of proteins are known as amino acids.

Which metallic crystal structure has a coordination number of 8

Answers

Answer:

body-centered cubic

Explanation:

:D

what percent of a sample of a radioactive element whose half life=5.0 years will decay after 25 years?

Answers

Answer:

Calculate the rate of decay constant for U-238 if its half-life is 4.468 × 109 years. Answer: If the problem is referring to the half-life, then the ratio of = 0.5 because half of the original sample has already undergone decay.

Explanation:

Un estudiante de noveno año decide realizar varias mezclas de compuestos quimicos y tiene un frasco rotulado con la formula quimica: MgO ¿cual es el nombre del compuesto?

Answers

Answer:

- Oxido de magnesio

Explanation:

Mg → magnesio

O → oxígeno

La unión del oxígeno (no metal) con un metal, forma el determinado óxido que se nombra como óxido de .... y el no metal.

En este caso, podemos deducir que el contenido del frasco es de óxido de magnesio, aunque viendo que hay un sólo átomo de oxígeno podemos llamarlo como monóxido de magnesio, similar al CO (monóxido de carbono).

A partir de que el magnesio sólido entre en contacto con el aire, se produce MgO de acuerdo a la siguiente reacción:

2Mg  +  O₂ →  2MgO

The object will have a minimum gravitational potential energy at point
A)A B)B C)C D)D

Answers

Answer: Decrease

Explanation: The downward slope causes the momentum to decrease in speed rather than increase from an higher point.

Which of the following is a component of natural gas? A)gasohol B)methane C)gasoline D)kerosene

Answers

Answer:

Methane

Explanation:

It is methane because, it comes from natural sources.

Will mark brainliest for who is right
Which properties change the composition of a substance?

chemical and physical properties


neither chemical nor physical properties


physical properties


chemical properties

Answers

Chemical properties

what layer of the Earth is made of liquid metal?

Answers

Answer:

the outer core

Answer:

The outer core

Other Questions
Chad washes windows after school to make some extra money. He charges $5.50 to wash each window. If the customer provides the supplies, Chad deducts $3.25 from the total cost. One customer paid a total of $27.50 and did not provide supplies. Which equation could be used to find the number of windows, w, that Chad washed for this customer? The tuition and fees at a two-year college are $135 per credit hour. If Tyler takes h credit-hours, write an expression for the cost of his tuition and fees. The revolt at Anahuac ended with _____________.a.the return of Stephen F. Austinb.the outbreak of malariac.the surrender of Captain Tenorios forcesd.the surrender of William B. Travis PLEASE HELP WILL GIVE BRAINLIEST Racism is a form ofA patriotismB. toleranceC. prejudiceD. good citizenshiphPlease select the best answer from the choices providedD People who have Tay-Sachs disease cannot metabolize some lipids effectively. Tay-Sachs is a recessive disorder. A student used a Punnet Square to determine the probability of offspring inheriting the disease. The results from a Punnet Square are 25% TT, 50% Tt, and 25% tt.Which conclusion can be made regarding the phenotype of the parents based on these results? The parents must be TT, TtThe parents must be Tt, ttThe parents must be TT, ttThe parents must be Tt, Tt Hypothesis: If the starting height of a sloped racetrack is increased, then the speed at which a toy car travels along the track will ________ because the toy car ____ somebody once told me what is 31)775 please someone help me ActivityThe picture shows five different embryos. Study the picture, and then answer the questions.What similarities and differences do you notice among the different embryos? What Does the D in D-Day Stand For? What does Chan say that shows that he is discouraged by his accident? (PLEASE ANSWER)You have 2 different savings accounts. For Account A, the simple interest earned after 3 months is $0.90. For Account B, the simple interest earned after 18 months is $22.50. If the interest rate is 3.6%for Account A and 2.5% for Account B, how much is the principal in each account? Which account earned you the most interest the first month? Explain your answer. Account A has a principal of $BLANK. (Round to the nearest dollar as needed.) Give 4 examples of types of specialized cells. Find the measure of the angle indicated in bold.Answer Choices:84o125o60o100o What are the two types of anaerobic respiration? Describe the two in one paragraph. What will happen to a salt water fish if placed in freshwater? Carl makes the table below to determine the number of atoms of each element in the chemical formula 4Ca(ClO3)2.A table with 3 columns and 2 rows. The first column labeled element has entries calcium, chlorine, oxygen. The second column labeled calculation has entries 1 times 4 , 1 times 2, 3 times 2. The third column labeled total atoms has entries 4, 2, 6.What mistake did Carl make? During cellular respiration, the bonds of food molecules are broken, so energy can be released to fuel other cellular processes. In order for this to occur, which of the following statements must be true? help me with this question if you dont mind