Help with some 6th grade science questions!! Good points for it!!!!!! 10

1.Assume that the general use of ( if......Then ......) to dedicate.

2 Experiments are methods of creating conditions and gathering evidence of changes in things. There are two main types of it: one and two

3.Mold is a filamentous fungus that is fluffy, cotton-wool, and cobweb-like.

4.Cells have different structures, functions, and morphologies.

5.It takes 1 (year) for the moon to revolve around the sun, and it takes (24 hours) for the earth to rotate. Question added:

The last question is:

5.It takes 1 hour for the moon to revolve around the sun, and it takes ( ) hours for the earth to rotate.

Worried about my dad.

When the teacher taught me to sing "Only Mom is Good in the World", the other students were singing emotionally, but I was there with tears in my eyes and couldn't open my mouth; When the teacher assigned to write an essay entitled "My Mother", I handed in an essay called "My Dad" and handed it to the teacher alone in tears.

Many years ago, my father and mother divorced. At that time, 5-year-old me, my 3-year-old sister, and 1-year-old brother had been living hard with my father. Although we live in single-parent families, we have no less love than other children.

When I was a child, no matter how tired my father was, after finishing the farm work, he would cook for us, accompany us to do our homework, and then coax us to sleep with a smile. Dad didn't buy a new dress for several years, the clothes always had patches, and we were able to put on beautiful new clothes on the Spring Festival every year. In class, I learned to play the harmonica.

When I got home, I excitedly said to my dad, "Dad, I can play the harmonica." I wanted to borrow the harmonica from the teacher, but the teacher said that it was public and could not be borrowed.

Although I was only 10 years old at the time, I understood my dad very well and did not ask him to buy a harmonica for me. However, within a few days, I had a harmonica, which my father had bought for me by selling all the beans in the garden.

Daddy always had a smile on his face and never lost his temper with us, let alone hit us. In this way, the three of us grew up healthily under the care of our father.

Today, I am in college in another place, my sister is studying in a high school in my hometown, my younger brother is in the army in other places, and my father is left alone. My dad at home became our only concern.

Dad, you're great. I can't say anything like that when I face you, I can only put it into words.

I'll borrow it tomorrow.

Just calculate according to the proportions!

m = diameter of the sun

Get the diameter of the sun.

m/ m==

1）al(oh)3

Hydrochloric acid. The solid is completely dissolved and gas is generated.

2) There is no table reaction number on your diagram, I guess it is the one at the bottom of scheme 2: 2NaOH + CO2 = NA2CO3

In the industry, the solution is good, because there are few raw materials and there are no by-products.

3) The mass of the positive brightness is CO2, and the corresponding equation is CaCO3+2HCl=CaCl2+H2O+CO2

The molecular weight of CaCO3 is 40+12+16*3=100, and the molecular weight of CO2 is 12+16*2=44

The mass of calcium carbonate is (, and the mass fraction is the lifting width.

1.The dish soap rolls quickly, according to inertia: the dish soap is viscous and the bottle with dish soap can be seen as a whole, moving at the same speed. A bottle with water Water and bottle are two parts that move at different speeds, and water acts as a hindrance.

2.The candle does not go out immediately, because the outer surface of the candle does not melt when it comes into contact with water, but it melts closer to the center of the flame and burns.

3.Raw eggs sink to the bottom of the water when placed in a glass filled with water, unchanged.

Raw eggs float when placed in a glass filled with vinegar, and over time, the crust undergoes a chemical reaction, softening and sinking.

1. In the pure ideal case, it should be the same speed, although the mass is not the same, but the acceleration is the same.

2. The candle will not go out, it will form a cylinder because of the edge; The wax is not warm enough to melt, thus preventing the immersion of water, however, the cylinder will not be very high. Because he didn't have enough support.

3. If you put it in water, it will not solidify, but if you put it in vinegar, it will solidify.

It's all lab questions, and doing it yourself is more useful than anything else.

The bottom of the cup is under the pressure of kerosene:

f=ps=hρgs=10cm*==

The pressure of the glass on the horizontal tabletop:

p=f/s=(

=2000pa