First Semester Test Review--Part 2

Scientists use models to help explain the structure of the atom. Label the parts of the model below.

a

b

c

d

e

protons

neutrons

electrons

orbits/shells

nucleus

Tags

NGSS.MS-PS1-1

Which model correctly represents particle charges of an atom?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which statements about the periodic table are correct?

(pick 2 answers)

• All elements in the periodic table have different names and symbols.

• It is a chart that lists all elements known to man.

• All substances present on Earth are listed in the periodic table.

• There are more than 1,000 elements listed in the periodic table.

What orbits the nucleus of an atom?

• neutrons

• electrons

• protons

• nucleus

Tags

NGSS.MS-PS1-1

What does the nucleus of an atom contain?

• protons and electrons

• electrons and neutrons

• protons and neutrons

• protons only

Which number represents the location of the subatomic particle on the atom that carries a negative charge?

• 1

• 2

• 3

• 4

Which of the following 3 statements are true regarding atoms?

• • Contain electrons outside of the nucleus

• Contain neutrons outside of the nucleus

• Contain neutrons in the nucleus

• Contain protons in the nucleus

• Contain electrons in the nucleus

Tags

NGSS.MS-PS1-1

Which can be determined from the atomic number?

• the number of neutrons

• the number of quarks

• the number electrons + neutrons

• the number of protons

Fluorine has an atomic number of 9 and an atomic mass of 18.  How many protons does an atom of fluorine have?

• 18

• 9

• 10

• 19

Tags

NGSS.MS-PS1-1

Elements are to symbols as compounds are to —

• symbols

• formulas

• reactions

• equations