What is the certainty of a measurement?

The level of confidence in the measurement

The amount of variation in the measurement

The number of significant figures in the measurement

The level of accuracy of the measurement

Anything that takes up space and has mass

Anything that is visible to the naked eye

A substance that cannot be broken down into simpler substances by chemical means

A substance that is made up of two or more different types of atoms

A mixture of two or more substances that are not chemically combined

A substance made up of two or more elements, chemically combined in a fixed ratio

What is a chemical change?

A change in which the identity of the substance changes

A change in which the identity of the substance does not change

A change in which the temperature of the substance changes

A change in which the volume of the substance changes

The ability to do work or produce heat

A measure of the amount of matter in an object

A measure of the gravitational force on an object

A measure of the amount of space occupied by an object

The transfer of thermal energy between objects that are at different temperatures

The total kinetic energy of the particles in an object

A measure of the gravitational force on an object

The ability of an object to float in a fluid

What is a physical separation?

A separation in which the substances are separated based on their physical properties

A separation in which the identity of the substance changes

A separation in which the substances are separated based on their chemical properties

A separation in which the temperature of the substance changes

What is the law of conservation of energy?

Energy cannot be created or destroyed, only transferred or converted

Energy can be created out of nothing

Energy can be destroyed completely

Energy only exists in living things

What is a physical separation method?

Separating a mixture based on the differences in boiling points of its components

Burning a mixture to separate its components

Dissolving a mixture in water to separate its components

What is the atomic number of an element?

The number of protons in the nucleus

The total number of protons and neutrons in the nucleus

The total number of electrons in the atom

The number of neutrons in the nucleus

Which of the following is true about atomic radii?

They increase from top to bottom within a group.

They decrease from top to bottom within a group.

They increase from left to right across a period.

They decrease from left to right across a period.

What is ionization energy?

The amount of energy required to remove an electron from an atom in the gas phase

The amount of energy required to attract a proton to an electron

The amount of energy required to add an electron to an atom in the gas phase

The amount of energy required to break a covalent bond

Which trend is observed in ionization energy across a period on the periodic table?

It increases from left to right

It decreases from left to right

What does a higher ionization energy indicate?

The atom has a stronger hold on its valence electrons

The atom has a weaker hold on its valence electrons

The atom has no valence electrons

The atom has lost all of its electrons

Why does ionization energy increase across a period on the periodic table?

The increasing number of protons and electrons leads to a stronger attraction between the nucleus and electrons

There are fewer protons and electrons

The atoms get larger moving from left to right

The valence electrons are farther from the nucleus

YBTC - Mega Quiz

Authored by Subhash Bylaiah

Chemistry

6th - 8th Grade

NGSS covered

Used 5+ times

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67 questions

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MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What are the steps of scientific inquiry?

Observation, hypothesis, experimentation, conclusion

Experimentation, conclusion, hypothesis, observation

Hypothesis, experimentation, conclusion, observation

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the difference between a theory and a law?

A theory is a well-substantiated explanation of some aspect of the natural world, while a law describes an observed phenomenon without explaining why it occurs

A theory is a prediction about future events based on past observations, while a law is a generalization about a group of phenomena

There is no difference between a theory and a law

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which of the following is not a type of physical measurement?

Length

Temperature

Time

Intelligence

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the SI unit of length?

Meter

Gram

Liter

Celsius

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the abbreviation for kilogram?

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How many centimeters are in one meter?

100

1000

10000

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How is 0.00005 written in scientific notation?

5 x 10^-5

5 x 10^5

5 x 10^-6

5 x 10^6

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YBTC - Mega Quiz

What are the steps of scientific inquiry?

What is the difference between a theory and a law?

Which of the following is not a type of physical measurement?

What is the SI unit of length?

What is the abbreviation for kilogram?

How many centimeters are in one meter?

How is 0.00005 written in scientific notation?

What is the certainty of a measurement?

Which of the following is an example of a derived unit?

What is the SI unit of temperature?

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