The process of a liquid changing into a gas at the surface is called:

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The process of a liquid changing into a gas at the surface is called:

A. Evaporation

B. Condensation

C. Sublimation

D. Fusion

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Which element is essential for all organic compounds?

A. Carbon

B. Oxygen

C. Hydrogen

D. Nitrogen

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Which gas is used in the process of photosynthesis?

A. Carbon dioxide

B. Oxygen

C. Nitrogen

D. Hydrogen

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Which element is essential for the process of respiration?

A. Carbon

B. Oxygen

C. Hydrogen

D. Nitrogen

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What is the chemical formula for acetic acid, found in vinegar?

A. HCl

B. H2SO4

C. CH3COOH

D. HNO3

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What is the chemical formula for aspirin?

A. C6H12O6

B. CH4

C. C9H8O4

D. C12H22O11

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The atomic number of an element is determined by the number of:

A. Protons

B. Electrons

C. Neutrons

D. Nucleons

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Which subatomic particle has a negative charge?

A. Proton

B. Neutron

C. Electron

D. Nucleus

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What is the chemical formula for nitric acid?

A. HCl

B. H2SO4

C. HNO3

D. H3PO4

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Which type of bond involves the sharing of electrons?

A. Ionic bond

B. Covalent bond

C. Metallic bond

D. Hydrogen bond

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Which of the following is a greenhouse gas produced by human activities?

A. Oxygen

B. Carbon dioxide

C. Nitrogen

D. Argon

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What is the atomic number of carbon?

A. 12

B. 14

C. 6

D. 8

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Which element is a noble gas and is often used in advertising signs?

A. Neon

B. Xenon

C. Krypton

D. Argon

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How many hydrogen atoms are in one molecule of methane (CH4)?

A. 1

B. 2

C. 3

D. 4

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What is the chemical formula for water?

A. H2O

B. CO2

C. CH4

D. O2

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Which gas is produced during photosynthesis?

A. Oxygen

B. Carbon dioxide

C. Nitrogen

D. Hydrogen

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The pH scale measures the acidity or alkalinity of a substance. A pH value of 7 is considered:

A. Acidic

B. Alkaline

C. Neutral

D. Basic

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What is the chemical symbol for potassium?

A. Po

B. Pa

C. K

D. Ke

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What is the chemical symbol for iron?

A. Ir

B. Fe

C. In

D. Ni

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Which of the following is a greenhouse gas?

A. Oxygen

B. Nitrogen

C. Carbon dioxide

D. Argon

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Which of the following is a halogen?

A. Sodium

B. Fluorine

C. Potassium

D. Calcium

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What is the chemical formula for sodium chloride?

A. NaCl

B. Na2Cl

C. NaCl2

D. Na2Cl2

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What is the chemical formula for sodium hydroxide?

A. NaOH

B. HCl

C. Na2CO3

D. H2SO4

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What is the chemical formula for carbon dioxide?

A. CO2

B. CH4

C. CO

D. C2O

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Which element is commonly used in batteries?

A. Calcium

B. Lithium

C. Aluminum

D. Zinc

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What is the chemical formula for sodium bicarbonate?

A. NaHCO3

B. NaOH

C. Na2CO3

D. Na2SO4

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What is the chemical formula for sulfur dioxide?

A. SO2

B. H2SO4

C. SO3

D. H2S

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How many electrons are in the outermost energy level (valence shell) of a neutral oxygen atom?

A. 2

B. 6

C. 8

D. 4

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What is the chemical formula for table salt?

A. NaCl

B. H2O

C. CO2

D. CH4

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Which gas makes up the majority of Earth's atmosphere?

A. Oxygen

B. Carbon dioxide

C. Nitrogen

D. Hydrogen

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The process of a liquid changing into a gas at the surface is called:

A. Evaporation

B. Condensation

C. Sublimation

D. Fusion

Discuss this answer

Accepted Answer

A. Evaporation

The process of a liquid changing into a gas at the surface is called:

Correct Answer :

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Related Questions

Which element is essential for all organic compounds?

Which gas is used in the process of photosynthesis?

Which element is essential for the process of respiration?

What is the chemical formula for acetic acid, found in vinegar?

What is the chemical formula for aspirin?

The atomic number of an element is determined by the number of:

Which subatomic particle has a negative charge?

What is the chemical formula for nitric acid?

Which type of bond involves the sharing of electrons?

Which of the following is a greenhouse gas produced by human activities?

What is the atomic number of carbon?

Which element is a noble gas and is often used in advertising signs?

How many hydrogen atoms are in one molecule of methane (CH4)?

What is the chemical formula for water?

Which gas is produced during photosynthesis?

The pH scale measures the acidity or alkalinity of a substance. A pH value of 7 is considered:

What is the chemical symbol for potassium?

What is the chemical symbol for iron?

Which of the following is a greenhouse gas?

Which of the following is a halogen?

What is the chemical formula for sodium chloride?

What is the chemical formula for sodium hydroxide?

What is the chemical formula for carbon dioxide?

Which element is commonly used in batteries?

What is the chemical formula for sodium bicarbonate?

What is the chemical formula for sulfur dioxide?

How many electrons are in the outermost energy level (valence shell) of a neutral oxygen atom?

What is the chemical formula for table salt?

Which gas makes up the majority of Earth's atmosphere?

The process of a liquid changing into a gas at the surface is called:

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