Worksheets8.5
Total questions: 15
Worksheet time: 15mins
This reaction has the same number of Oxygen atoms in the reactants as it does in the products.
TRUE
FALSE
In what section would you most likely find an element that is a brittle solid at room temperature and is not a good conductor?
Section 1
Section 2
Section 3
There are no elements that are brittle solids
The following two elements:
Have similar chemical properties and can be found in Group 7 of the periodic table
Do not have similar chemical properties and are not in the same group
Have similar chemical properties and can be found on opposite sides of the periodic table
Have similar chemical properties and can be found in Group 2 of the periodic table
Most of the elements on the periodic table are___________
Non-Metals
Metals
Gases
Metaloids
Valence Electrons determine an element's___________________________, While Protons determine an element's____________________________.
IDENTITY; REACTIVITY
Both determine reactivity
REACTIVITY; IDENTITY
Both determine identity
A researcher began the following reaction with 52.6 grams of sugar and Sulfiric Acid in part A. The final mass of the products in part B would MOST LIKELY be:
More than 52.6 grams
Less than 52.6 grams
Exactly 52.6 grams
Cannot be determined
The following reaction includes 4 Elements.
TRUE
FALSE
To create a Precipitate, means to form a_____________.
Liquid
Semi-solid
Solid
Metal
A Student drew atomic models of four atomic models. 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
An atom of which element is represented by this model?
Carbon (C)
Neon (Ne)
Sodium (Na)
Boron (B)
A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity?
The number of neutrons
The number of protons
The location of valence electrons
The number of valence electrons
Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below.
Student 1
Student 2
Student 3
Student 4
What is the pH level of a solution that is considered neutral?
7
8.5
6.5
9
If a solution has a pH of 8.5, what can be inferred about its nature?
It is acidic
It is neutral
It is basic
It is a strong acid
Which of the following pH values indicates a stronger base than a solution with a pH of 8.5?
7.5
8
9
8.2
