Milady Cosmetology Basic Chemistry

What is the smallest unit of an element that still retains the properties of that element?

• atom

• cell

• molecule

• compound

Tags

NGSS.MS-PS1-1

What is the charge of a proton?

• Positive

• Negative

• Neutral

• Variable

What type of bond is formed when electrons are shared between atoms?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Metallic bond

Tags

NGSS.HS-PS1-1

In a chemical reaction, what are the substances that are present before the reaction begins called?

• Products

• Reactants

• Catalysts

• Solvents

Tags

NGSS.MS-PS1-1

What is the pH of a neutral solution?

• 7

• 5

• 3

• 10

What is the study of carbon-containing compounds called?

• Organic chemistry

• Inorganic chemistry

• Physical chemistry

• Biochemistry

How many periods are there in the periodic table?

• 12

• 7

• 5

• 10

What is the symbol for the element with atomic number 6?

• C

• N

• H

• O

What is the name of the group 17 elements in the periodic table?

• Noble gases

• halogens

• Alkali metals

• Transition metals

What is the name of the process by which a solid changes directly into a gas without first becoming a liquid?

• evaporation

• sublimation

• melting

• condensation

Tags

NGSS.MS-PS1-4