4/5 - STAAR Blitz - Chemistry

STAAR Blitz

Chemistry

Multiple Select

Which three statements below are true? Select three.

• Neutrons are located inside the nucleus of an atom.

• Neutrons have a negative charge.

• Protons and neutrons are both located inside the nucleus.

• Protons have a neutral charge.

• Neutrons have a neutral charge.

Multiple Choice

What is the atomic number of this nucleus?

• 1

• 3

• 4

• 7

Multiple Choice

How many protons are in Cadmium?

• 112.411

• 170

• 64

• 48

Multiple Choice

How many neutrons are in Fluorine?

• 9

• 28

• 19

• 10

Multiple Choice

What group and period does this element belong in?

• period 1 and group 3

• period 3 and group 1

• period 2 and group 3

• period 3 and group 2

Multiple Choice

Which two atoms are of elements in the same group of the periodic table?

• Atom 3 and Atom 4

• Atom 2 and Atom 3

• Atom 1 and Atom 2

• Atom 1 and Atom 4

Fill in the Blanks

The atom in the picture has

valence electrons.

Multiple Choice

Based on the drawings, which one is the least reactive?

• Chlorine, because it has three energy levels with seven electrons in the third level

• Gallium, because it has four energy levels with three electrons in the fourth level

• Neon, because it has two energy levels with eight electrons in the second level

• Tin, because it has five energy levels with four electrons in the fifth level

Multiple Choice

Which of the following is an insulator?

• Nonmetal

• Metal

• Metalloid

Multiple Choice

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon?

• Metal

• Nonmetal

• Metalloid

Multiple Choice

Which of the following is a good conductor of heat, malleable, ductile, and shiny?

• Metal

• Nonmetal

• Metalloid

Multiple Choice

Which element is a metalloid?

• Titanium

• Selenium

• Potassium

• Polonium