Does the mass of ice melt into water? Does the density change? Does the weight change? Does the volume change?

The mass and weight remain unchanged, the density increases and the volume decreases

RELATED INFORMATIONS

1. The mass is 30kg, the volume is 200m3, what is the density
2. The volume of the hollow aluminum ball is 30cm3, the mass is 27g, and the total mass is 43g after filling with a certain liquid?
3. The volume of the metal ball made of iron lead alloy is 5 decimeter ^ 3, in which the volume of iron accounts for 30% of the total volume. What is the density of the metal ball? (density of iron: 7.8 × 10 ^ 3 kg / m ^ 3. Density of lead: 11.3 × 10 ^ 3 kg / m ^ 3) Please use known answers
4. How to calculate the volume and density of an object
5. When a piece of wood floats on the water surface, it is measured that 1 / 5 of the volume of the wood is above the water surface, from which the density of the wood can be calculated______ Kg/m3．
6. A wooden block floats on the water surface. Put an object of M = 4kg on the wooden block, and the wooden block just submerges into the water. If a wooden block with a density of 5000kg / M is hung under the wooden block for three times Square alloy block, wooden block suspended in water, to find the mass of alloy block
7. The density of wood block is 0.6 × 10 ~ (- 179); kg / M ~ (- 179); the volume is 4dm ~ (- 179); it floats on the water surface (g = 10N / kg) The density of wood block is 0.6 × 10 ~ (- 179); kg / M ~ (- 179); the volume is 4dm ~ (- 179); it floats on the water surface (take g = 10N / kg); (1) Gravity of wood block (2) Buoyancy of wood block (3) Volume of boiled water discharged by wood block
8. What is the mass and volume of the water after the 1m ^ 3 ice melts into water?
9. What is the mass and volume of water after all the ice cubes of one cubic meter melt into water? As mentioned above, the density of ice is 0.9x10 cubic meter
10. Take out a 500cm3 ice cube from the refrigerator and melt it in the outdoor sunlight. After all the ice cubes are melted into water, the quality of the water is 100%______ And the volume is______ ．
11. "Haibao" is the mascot of the 2010 World Expo, and its image is shown in the picture. Among all kinds of "Haibao" dotted on the streets of Shanghai, there is a "Haibao" (uniform and solid) with a mass of 3.0 × 103kg, a density of 1.5 × 103kg / m3 and a contact area of 1m2 with the horizontal ground. Then "Haibao": ① the volume is______ The gravity is______ N. What is the pressure on the ground______ Pa．
12. "Haibao" is the mascot of the 2010 Shanghai World Expo. Among the "Haibao" ornamented on the streets of Shanghai, there is a solid one with uniform quality The mass is 3.0 times 10 cubic kilogram, and G is 10N per kilogram. What is the pressure of this "Haibao" on the horizontal ground? (process)
13. "Haibao" is the mascot of the 2010 World Expo. Among all kinds of "Haibao" dotted on the streets of Shanghai, one "Haibao" has a volume of 2 cubic meters and a density of 1.5 times 10 kilograms per cubic meter. The quality of this "Haibao" is calculated
14. Haibao is the mascot of the 2010 Shanghai World Expo. As shown in the picture, it is a sculpture of Haibao on the street of Shanghai. If its mass is 5.4 × 10 ^ 3kg, the sculpture and the base are the same 2 m2. (g = 10 N / kg) (1) Seeking the gravity of sculpture; (2) Find the pressure of the sculpture on the base; (3) Please use your physics knowledge to explain the benefits of installing the base under the sculpture
15. "Haibao" is the mascot of the 2010 Shanghai World Expo. Its image is shown in the picture. Among all kinds of "Haibao" arranged on the streets of Shanghai, there is one "Haibao" The material is uniform and solid, the density is 1.5 × 10 3 kg / M 3, and the volume is 3 m 3. It is placed on the horizontal ground, and the contact area with the ground is 1 m 2. Take g = 10 N / kg, please ask: (1) what is the mass of this "Haibao"? (2) what is the pressure of this "Haibao" on the ground?
16. In order to prepare 75% medical alcohol for disinfection, students need to use a measuring cylinder to measure 100g pure alcohol with a density of 0.8g/cm ^ 3 at a time. They should choose ↓ of the measuring cylinder The range and division values are () A.50ml;5ml B.100ml;2ml C.250ml;5ml D.400ml;10ml
17. There are four kinds of measuring cylinders of the following specifications (the front is the measuring range, and the back is the minimum scale value). Which one do you choose to measure the mass of 100g and the density of 0.8 * 10 Cubic kilogram per cubic meter of alcohol? A 100ml 5ml B150ml 2ml C 150ml 5,ml D 500ml 5ml
18. In order to measure alcohol with a density of 0.8 × 103kg / m3 and a mass of 100g at a time, there are four kinds of measuring cylinders to choose from. Which one do you think is more suitable () A. The measuring range is 50ml B, 100ml C, 250ml D and 1000ml
19. Can you measure 100g of alcohol without balance and only with measuring cylinder? Known Please
20. In order to prepare 1.1x10 cubic kg / m3 brine, 1 liter brine has been prepared, and its weight is 1200g (1) Does this salt meet the requirements? (2) if not, should we add water or salt? How many kilos?