Chemistry 2 Review

Which indicator turns pink or magenta in a base?

• acid

• litmus paper

• pH paper

• phenolphthalein

Which of the following describes the rules for litmus paper?

• Blue=base; red= acid; no change=neutral

• No change=neutral; red=acid; pink=base

• Pink=base; red=acid; orange=neutral

• Blue=base; green=acid; yellow=neutral

If battery fluid falls between 1 and 2 on the pH scale, which of the following is true?

• It is a weak acid

• It is neutral

• It is a strong acid

What is the product in the following chemical equation?

2H₂ + O₂ 🡪 2H₂O

• H₂

• O₂

• 2H₂ and O₂

• 2H₂O

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The portion of the chemical equation on the right is called ________.

• reactants

• yields

• products

• elements

According to the law of conservation of matter, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

• The masses are equal

• The mass of the product is greater

• The mass of the reactants are greater

• No relationship

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The formula for carbon dioxide is CO₂. What does that mean?

• It has two carbon and one oxygen atom.

• It has one carbon and one oxygen atom.

• It has one carbon and two oxygen atoms

• It has two carbon and two oxygen atoms

Tags

NGSS.MS-PS1-1

What are the similarities between the formulas for Oxygen gas and Carbon Dioxide gas?

• They both have 2 elements.

• They both have 2 oxygen atoms.

• They both have 3 atoms.

• They are both liquids.

Tags

NGSS.MS-PS1-1

Which of these is a chemical property?

• color

• flammability

• density

• size

You can describe a lemon as being oval, yellow colored, and sour tasting. All of these are _________________.

• Physical properties

• Physical change

• Chemical properties

• Chemical change