What is the center of an atom called?

• Electron

• Nucleus

• Proton

• Neutron

Tags

NGSS.HS-PS1-8

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

(Use periodic table, located in the back of the book) What is the atomic number of carbon?

• 6

• 12

• 8

• 14

(Use periodic table, located in the back of the book) Which element is located in Group 1, Period 2 of the periodic table?

• Lithium

• Sodium

• Potassium

• Hydrogen

Tags

NGSS.HS-PS1-1

(Use periodic table located in the back of the book) What is the chemical symbol for sodium?

• S

• Na

• So

• N

Which of the following is a chemical change?

• Melting ice

• Dissolving sugar in water

• Burning wood

• Breaking glass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

(Use periodic table located in the back of the book) What is the atomic weight of Silver (AG)

• 6U

• 107.07U

• 47U

• 100U

Which of the following equations is balanced?

Tags

NGSS.HS-PS1-7

What is the pH of a neutral solution at 25°C?

• 0

• 7

• 14

• 1

Which of the following is a property of acids?

• Bitter taste

• Slippery feel

• Turns blue litmus red

• Turns red litmus blue