Semester (Chemistry) Final

The SI unit used for length is the:

• meter

• liter

• foot

• mile

The gram is the SI unit for:

• pound

• volume

• length

• mass

Kool-Aid is made up of 85% water, 10% sugar, and 5% drink mix. In this solution, which is the solvent?

How many HCl molecules do you need to balance this equation?

2Mg + ​ (a)   HCl ---> 2MgCl₂ + 2H₂

• 4
• 1
• 2
• 3

Tags

NGSS.MS-PS1-5

PCl₅  +  ___ H₂O  →  ___ HCl  +   H₃PO₄

• 4, 5
• 1, 6
• 3, 8
• 2,2

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

True or False: When balancing chemical equations the subscripts can change.

• true
• false

Tags

NGSS.HS-PS1-7

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

Tags

NGSS.MS-PS1-1

An element with a mass number of 10 and an atomic number of 6 has how many protons?

Tags

NGSS.MS-PS1-1

How many electrons does Si contain? (click to see image)

Tags

NGSS.MS-PS1-1

What period and group is Silver (Ag)? 

• Period 2, Group 1
• Period 3, Group 16
• Period 5, Group 11
• Period 2, 14