What is the name of the scientist that looked through a microscope and noticed small box-like structures that resembled honeycombs found in a bee’s nest?
(ill give you brainlest)

Which of the following reactions best illustrates the Law of Conservation of Matter?
A.) H2O2H2O + O2
B.) Na + CuS Na2S + 2Cu
C.) K + AgCl KCl + Ag
D.) NaOH + 2HCl NaCl + H2O

HELP PLS THIS IS DUE IN 15 MINUTES PLS PLS PLS!!! I WILL MARK BRAINLIEST IWTH THE BEST ANSWER!!!
List 2 Physical Changes & 2 Chemical Changes and explain why.

What is true for two pieces of iron at the same temperature?

Before you can solve a problem, the first thing you have to do is Question 2 options:

define the problem
build a prototype
design your solution
test your solution

Which set of terms best defines what affects kinetic energy and potential energy, respectively?

position, gravity
gravity, velocity
velocity, height
height, position

How do matter and energy move through an ecosystem?

My scientific explanation is:

Your answer should include at least 1-2 complete sentences to explain the claim, evidence and reasoning.
Be sure to check your grammar and spelling.
Use the Sentence Starter to help you:

Matter and energy move through an ecosystem by...

Which statement describes the energy changes that occur when water in a tea kettle is heated on a stove that uses natural gas


A:Some of the chemical energy in the natural gas transforms into thermal energy, which heats the water. Then some of the thermal energy changes into sound energy when the water forms steam and the steam leaves the kettle.

B:Some of the electrical energy in the natural gas transforms into thermal energy, which causes the water to form steam. Then some of the thermal energy changes into sound energy and light energy when the steam leaves the kettle.

WILL GIVE BRAINLIEST! What greenhouse gas most controls the temperature? And when is it released?

Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer

What’s the most historic thing that has happened in your lifetime?

need help as soon as possible ill give brainliest!!!!!!!!!!!!!!!!

When they're trying to solve a problem, engineers follow a series of Question 1 options: problems steps solutions tests

The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table.

Rock Density Ranges
Rock Density Range
(g/cm3)
Coal 1.1-1.4
Dolomite 2.8-2.9
Peridotite 3.1-3.4
Sandstone 2.2-2.7

The students most likely have which type of rock?

A: Coal
B: Dolomite
C: Sandstone
D: Peridotite

A student used a portable electric drill to remove screws from a broken wooden table. He noticed that the screws holding the table together were warm to the touch after being removed from the wood. Which statement best explains this phenomenon?
A:Electrical energy from the drill was converted into chemical energy due to conductivity.
B:The process of removing the screw concentrated the thermal energy that was already present in the wood

The starting temperature of the hot water was 70.1°C. The starting temperature of the ice sphere was 0.5°C. The final temperature of the dyed water is NOT half way between those numbers. In fact, it's much higher.

Why did this happen?

Compare and contrast the alkaline battery and a Zinc carbon battery. put in some other facts about them too. write somewhere around 2 paragraphs.



I'll mark brainlyest to whoever has the best answer and give them 50 points for helping me.

How do animals receive the sun's energy?

a. They use the sun's energy to make food.
b. They store solar energy in their bodies.
c. They use the energy stored in plant food.

Which of the following statements is true?

a. An insulator speeds up the transfer of heat.
b. Radiation is the transfer of heat in solids.
c. All moving objects experience friction.
d. All work gains some energy as heat.

If all three metals were exposed to extremely high temperatures, which would be the last to melt? (copper, gold, mercury)

Choose all the answers that apply.

The sun _____.

a. creates energy from fission reactions
b. creates energy through fusion reactions
c. transfers heat through radiation
d. is made of hydrogen and helium
e. uses its own mass to create energy

Can you please help me

jenny turned on the fan in her bedroom. what energy transformation took place when she turned on the fan

Help me guys plzlzlz

PLEASE HELP A GIRLL IN NEED

Science
The theory of continental drift states that the land masses called continents were once closer together and have drifted apart over time. Which circumstance is the strongest evidence in support of this theory?
Select one:

the periodic climate changes of Earth

the migration patterns of birds

the large variety of animals on each continent

the similarity of fossils on different continents

Please Help Me!!
Zn + 2HCl --> ZnCl2 + H2 Which of the following provides the best evidence that this reaction follows the law of conservation of mass?

1. Kylee has been learning that engineering and technology are beneficial to people. She now sees how things people synthesize are useful. The useful materials that benefit people are synthesized from _______.

A.synthetics
B.natural resources

Uranium is a radioactive element that is highly unstable and it has a half-life of 4.5 billion years. Uranium comes in many different forms (shown below). Looking at the nuclear notations below, what is the neutron number of both of the elements below? What is the relationship of the two elements below?
A: U-235 has 235 neutrons, U-238 has 238 neutrons and they are isotopes of each other.
B: U-235 has 143 neutrons, U-238 has 146 neutrons and they are isotopes of each other.
C: U-235 has 235 neutrons, U-238 has 238 neutrons and they are ions of each other.
D: U-235 and U-238 have 92 neutrons and they are ions of each other.

1. reaction that releases heat
outer ear
2. flow of electrons through a material toward a positive charge
compression
3. build up of electrons in a material
static electricity
4. part of the ear is responsible for capturing sound waves
exothermic
5. part of the sound wave where the molecules are pressed closely together
current electricity

What is the largest contributor to the greenhouse effect?