Primary school people's education edition sixth grade review questions with answers (Chinese, mathematics, English, scientific thinking) don't write the answers on the questions.

I. Fill in the blanks: 20

1, particles like sugar are solids with regular geometric shapes, and people call such solids solids solids.

2._ _ _ _ _ _ _ is a biologist, who made the world's earliest metal structure microscope with a magnification of nearly 300 times.

3. The edge of the lens of a magnifying glass is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ in the middle, so the magnifying glass is also called _ _ _ _ _ _ _ _ _ _.

4. When light enters the convex lens from the air, it will produce _ _ _ _ _ _ _ and bend. People think that the light reflected by an object travels along a straight line, so if it is valued through a convex lens, it will be amplified.

5, a large number of research facts show that life is made up of _ _ _ _ _.

6. Rice contains a substance called _ _ _ _ _ _ _ _, which will change _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

7. We can directly or indirectly observe that everything that actually exists is _ _ _ _ _ _, and the whole world is made up of _ _ _ _ _.

8. Matter is always changing. Some changes only changed _ _ _ _ _ _ _ and _ _ _ _ _ _ _, and some changes produced _ _ _ _ _ _ _.

9, salt dissolved in water, made of brine, this is _ _ _ _ _.

The changes of 10 and _ _ _ _ are closely related to our lives.

1 1. When the nails are immersed in copper sulfate solution, we can see the substances attached to the nails. We know that this substance is.

Second, true or false: 10

1. All solid substances in nature are crystals. ……………………………………………( )

2. The fine structure of an object can be observed by placing it directly under a microscope. ………………………( )

Ice can also be made into a magnifying glass. ………………………………………………………………( )

4. The establishment of cell theory is considered to be one of the three great discoveries of natural science in19th century. ……………………( )

5. The moving direction of the slide is consistent with the moving direction of the object image seen from the eyepiece. ……………( )

6, baking soda mixed with white vinegar will produce a lot of bubbles. ……………………………………………( )

7. Heating sugar with candles will not only change physically, but also change chemically. ………………………( )

8. Ice melts into water, so melting ice into water is a chemical change. ……………………………………( )

9. A reddish-brown substance adheres to the surface of nails in copper sulfate solution, which is rust. ……………( )

10, physical changes must have taken place in the process of chemical changes of substances. ……………………………( )

Third, multiple-choice questions: 20

1, the following objects do not have the magnifying glass function is ().

A, a cylindrical beaker b filled with water, a transparent glass ball c and a metal ball

2, scientists generally choose () to observe the SARS virus.

A, microscope b, electron microscope c, magnifying glass

3. We use () when observing onion slices and () when observing salt crystals.

A naked eye b magnifying glass c microscope

4, the following does not belong to the crystal is ()

A salt b snowflake c glass

5. The following are side views of different magnifiers, among which () magnifier has the largest magnification. ……( )

A, B, C, D,

6, put the lit thin bamboo stick into a cup mixed with baking soda and white vinegar, the flame will ()

A keeps burning, B goes out immediately, and C goes out later.

7, the factors affecting iron rust are ()

A is just water, B is just air, and C is the interaction between air and water.

8. Potatoes will change color when they meet iodine. This color-changing substance is ().

A starch b iodine c is neither starch nor iodine.

9, the color of copper sulfate solution is ()

A white b colorless c blue

10, which of the following places is easy to rust ()

A dry desert b wet tropical seashore c dry plateau

IV. Connection problem: 10

1. Connect the following experimental equipment with their functions in the experiment.

Tweezer culture microorganism or colony

Place the sliced specimen in a Petri dish.

Eyedropper dyeing

The slide absorbs a small amount of liquid.

Iodine pinch experimental material

2. Connect the following changes with lines.

Milk is made into yogurt.

Chemical changes in fireworks display

Bread mildew

Physical changes of water forming ice

The chocolate melted.

Four. Mapping problem 13

1、

( )

2、

Changes in matter

Adjoint phenomenon

trait

What is the change?

Water turns into steam.

Candle burning

A mixture of baking soda and white vinegar

Broken wood strips

Copper sulfate solution and nails

Iron rusts.

sharpen a pencil

Verb (abbreviation of verb) order question 7

1. Fill in the serial number in () according to the correct method of using the microscope.

() Turn the converter and turn the low-power objective lens under the lens barrel.

() adjustment screw, lift the lens barrel so that the objective lens is about 2-3cm away from the stage. Place the slide of the sample to be observed on the stage.

() Adjust the mirror below the stage. Looking down from the eyepiece, you can see a bright aperture.

() adjustment screw and lower the lens barrel so that the objective lens is just above the slide.

() Hold the mirror arm with one hand and the mirror base with the other hand, and put the microscope on the flat plate.

() adjustment screw, slowly lift the lens barrel until the sample appears.

() Move the slide slowly and observe all parts of the sample.

Verb (abbreviation of verb) short answer 6

1, please write three examples of preventing rust in life and explain the reasons.

2. What's the difference between lighting a match and breaking it? Explain.

Verb (abbreviation of verb) comprehensive question 14

1, and transform the learned function of cells into a bubble chart.

cell

2. What factors are related to the speed of iron rusting?