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.
Answers: 3
Mathematics, 21.06.2019 16:00
Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)
Answers: 1
Mathematics, 21.06.2019 21:40
The point a is at β2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 β x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =
Answers: 2
Mathematics, 21.06.2019 21:50
Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.
Answers: 2
Pls help me I will give brainist
Which of these will weigh the same after it has undergone a change...
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