Mathematics
Mathematics, 21.05.2021 16:20, nancy00

Pls help me I will give brainist Which of these will weigh the same after it has undergone a change?

Group of answer choices

paper being burned to ashes

sugar water being evaporated

two chemicals reacting to form a gas

ammonia added to steel wool to create heat

Which of these foods has been through a chemical change?

Group of answer choices

Carrots sliced for a vegetable tray.

Vinegar and oil mixed together to make a dressing.

Juice and water stirred together to make a drink.

Sugar and cream boiled to make a sauce.

Which of these describes a physical change to a piece of paper?

Group of answer choices

It has been mixed with turmeric and alcohol to change color.

It has been burned to a pile of ashes.

Bread placed in a toaster turns brown then black if left too long. What is needed for this chemical reaction to take place?

Group of answer choices

Heat energy has to be added

Heat energy has to be removed

Time must be allowed to pass.

The bread must be unwrapped.

It has been rolled into paper logs and burned

It has been cut into smaller pieces to make note cards.

Which shows that matter may be changed, but its weight will not change?

Group of answer choices

Some papers weigh less after they have been burned.

A clay ball, that is 5 cm wide is rolled into a snake 10 cm long.

20 thin markers will fit into the same box as 10 regular markers.

A candle that has only burned for 30 seconds will weigh the same.

Which correctly explains the results of this demonstration?

20 grams of baking soda is added to 100 grams of vinegar. As gas is released and it bubbles into the air.

Group of answer choices

The solution has all bubbled away.

The solution weighs less than 120 grams.

The solution weighs exactly 120 grams.

The solution weighs more than 120 grams.

answer
Answers: 3

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Pls help me I will give brainist Which of these will weigh the same after it has undergone a change...

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