Review for Quiz 1Chemistry

How many significant figures in 100.5 mL?

• 1

• 2

• 3

• 4

• 5

How many significant figures in 0.020700 s?

• 1

• 2

• 3

• 4

• 5

Change this number to scientific notation: 0.258

• 2.58*10^-1

• 2.58*10^-2

• 2.58*10^-3

• 2.58*10^-4

Change this number to scientific notation: 252

• 2.52*10^3

• 2.52*10^2

• 2.52*10^4

• 2.52*10^1

What makes the periodic table such a useful tool?

• The table lists all the elements in alphabetical order.

• The table lists all the elements in order of their abundance on Earth.

• The table groups the elements to show their usefulness.

• It allows you to compare the properties of the elements.

How are elements arranged in the modern periodic table?

• atomic mass

• atomic number

• protons

• neutrons

What is the name of the Group 1 elements?

• Noble Gases

• Alkaline Earth Metals

• Halogens

• Alkali Metals

What is the name of the Group 18 elements?

• noble gases

• alkaline earth metals

• halogens

• alkali metals

Which pairs of elements has similar physical and chemical properties? (3 answers here)

• Ca and Cr

• As and Sb

• K and Li

• Rb and Sr

• N and P

Which periodic trends are depicted here? There are 2 answers here.

• atomic radius

• electron affinity

• electronegativity

• ionization energy