Chemistry Middle School

Is this statement true or false?



If one or more substances change into new substances, a chemical change occurred.


true

false

Answers

Answer 1

Answer:

True

........

....

.....

....

....

...

..

...

...

Answer 2
True, the substance reacted to either the other substance or the surrounding air

Related Questions

Plzz write a small pharghraph
Question:

A 250mL Erlenmeyer flask weighing 55g contains 5g of sodium bicarbonate. To this, an excess, 15g, of acetic acid is added to the flask. While swirling, many bubbles are present. Finally, you stop swirling the flask, and the bubbles stop. You then place this flask on an analytical balance. The mass registers 73g.

How does this final mass compare with the value expected according to the Law of Conservation of mass?

Why do you believe that this comparison exists?

State the Law of Conservation of Mass. Do these results break this law? Why?

What changes, if any, could be made to the procedures in this experiment to allow a closer comparison to what the Law of Conservation would expect?

Answers

Mass = reactencts, 73g

Which of the following elements is inert, meaning it is not reactive?
a)Cesium
b)Gold
c)Iodine
d)Xenon

Answers

the answer ur looking for is B. gold :)
the answer is D. Xenon

Idk this question and I need help

Answers

Answer:

12 ML

Explanation:

BECAUSE THE WATER ROSE 12 ML SO THE KEY IS 12 ML

12 Mil because it’s stops there hopes this helps!

What is an ellipse please help)

Answers

normal oval shape traced by a point moving in a plane so that the sum of the distance from the other points is constant.

In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.

Maybe they might use that math thing for Science.

Other Questions
Evaluate the expression.17 * (-12 + 10)? numbers are (-20,10) and (40,-50) parallel to the line x-2y=-5 containing the point (0,4) What is the slope between the points (3,2) and (-1,10)?Will mark brainliest Why did the ROmans stop persecuting christians? Which is the last step in the problem-solving process? A gathering information B evaluating the solution C considering options D weighing disadvantages What does an elements location tell us about the forces within an atom? What is one of the most important requirements for a balanced diet?A. Eat a variety of foods.B. Eat three meals a day.C. Eat only home-cooked foods.D. Eat only low calorie foods. How did the Church use the changing politics of Europe to increase its influence?Write in 3-5 sentences. The area of a rectangular garden is 105 ft^2. Find the length if the width is 7ft. According to the theory of island biogeography which of the following ecosystems is not an island ecosystem?A) caveB) Salt marshC) mountaintopD) desert OasIsThanks! What fraction is 0.16% equivalent to? (16 is repeating) The magnitude $M$ of an earthquake is measured using the formula $M=\log(\frac{x}{c})$ , where $x$ is the measured amplitude of a seismic wave and $c$ is the reference amplitude of one micron. Two earthquakes are measured. The amplitude of a seismic wave in the first earthquake is 15 times the amplitude of a seismic wave in the second earthquake. How much greater is the magnitude of the first earthquake than the second earthquake? Round your answer to the nearest hundredth. In the figure below, OS=ST and the coordinates of T are (k, 5). What is the value of K?F. -5G. -3H. - 2J. 0K. 5SHOW EXPLANATION What is mixed croppingNeed urgent in 2 min how are fear and psychology used in poes works? 6^4*6^3 equivalent equation Explain why the products of photosynthesis and cellular respiration areecologically important. Determine the subunit composition of a protein from the following information:Molecular mass by gel filtration: 200 kDMolecular mass by SDS-PAGE: 100 kDMolecular mass by SDS-PAGE with 2-mercaptoethanol: 40 kD and 60 kD Find the value of x in the equation without evaluating the power