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Science 10

Authored by wilflor romero

Science

10th Grade

Used 1+ times

Science 10
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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During a chemical reaction

atoms are destroyed

atoms are rearranged

elements are destroyed

new elements are produced

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fresh fish and meat that are not stored in a refrigerator show signs of spoilage in less than a day. What has caused this spoilage?

temperature changes

presence of microorganisms

oxygen in air

all of the above

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The rate of reaction increases as the temperature increases. Which of the following

statements  provides the best explanation  for this?

At lower temperatures the particles do not collide with each other

At higher temperatures the particles have  more energy, move faster and collide more often

Higher temperature has higher activation energy

Increasing the temperature increases the number of particles so they collide more often

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following demonstrates that a new substance can be formed from a chemical reaction?

blowing up a balloon

iron bending

milk souring

water evaporating

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the best evidence that rusting is a chemical property rather than a physical property of iron?

rust can form on any iron

rust cannot turn back into iron

rust does not look the same as iron

rust forms slowly

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the best evidence that rusting is a chemical property rather than a physical property of iron?

rust can form on any iron

rust cannot turn back into iron

rust does not look the same as iron

rust forms slowly

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the best evidence that rusting is a chemical property rather than a physical property of iron?

rust can form on any iron

rust cannot turn back into iron

rust does not look the same as iron

rust forms slowly

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