Stuff I'm Worried About - Science Final

Describe how you balance an equation.

• Write out the equation. List the different coefficients and how many coefficients there are. Add elements if the number of the same coefficient is different on the other side.

• Write out the equation. List the different elements and how many elements there are. Add coefficients if the number of the same element is different on the other side.

• Write out the equation. List the different elements and how many elements there are. Subtract coefficients if the number of two different elements is the same on the other side.

• Write out the equation. Add coefficients to every element.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is an acid?

• An organic compound that changes color in an acid and base

• Any substance that forms hydroxide ions OHᐩ in an aqueous solution

• Substance that produces hydrogen ions in an aqueous solution

• H₃Oᐩ

What is a neutralization reaction?

• Compound formed when the negative ions from an acid combine with the positive ions from a base

• Repeating disturbances that carry energy through matter or space

• Material through which a wave transfers energy

• Chemical reaction between an acid and a base in an aqueous solution

Tags

NGSS.MS-PS1-5

A ___ chemical equation has the same number of atoms of each element on each side of the equation.

Tags

NGSS.MS-PS1-5

An ___ is a substance that produces OH- ions in a solution.

In a ___ reaction, an acid and a base produce salt and water.

pH measures the ___ of hydronium ions in a solution.

Coffee has a pH of about 5. Coffee is ___ ___.

___ ___ forms hydronium ions in water by losing its Hydrogen ion.

Shorter wavelength means (higher or lower) frequency? Why?

• Higher because more happen in one second

• Lower because more happen in one second

• Higher because less happen in one second

• Lower because less happen in one second

Tags

NGSS.HS-PS4-1