{{student_name}} > MISD Gr6 Science CBA #1
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6th grade 1st CBA Chemistry
1
Bubbling and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of which of the following?
-
A
A gas is formed when baking soda and vinegar are mixed
-
B
Baking soda dissolves in vinegar when they are mixed.
-
C
Vinegar turns into alcohol when it is mixed with baking soda.
-
D
A precipitate is formed when baking soda and vinegar are mixed.
2
A granular substance is added to a liquid. Which of the following would provide evidence to suggest a chemical change has taken place?
-
F
The liquid gives off heat.
-
G
The granules dissolve completely.
-
H
The volume of the liquid increases.
-
J
The granules seem to get smaller.
3
Carbon (C) is considered an element, while carbon dioxide (CO2) is considered a compound. This is because carbon dioxide is-
-
A
A gas at room temperature
-
B
Made of two different elements
-
C
Given off by green plants
-
D
Useful to human beings.
4
The table provided identifies a substance based on its density.
A sample of an unknown substance has a mass of 28 grams and a volume of 4cm3. Based on its density, it could be which of the following substances?
-
F
Gold
-
G
Iron
-
H
Lead
-
J
Tin
5
A rock with a mass of 70 grams is dropped into a graduated cylinder with 30mL of water in it. The water level rose as shown. Calculate the density of the rock in g/mL. Round your answer to the nearest whole number.
6
The table shows the physical properties of four elements.
Which element is classified as a metalloid?
-
F
Titanium
-
G
Selenium
-
H
Potassium
-
J
Arsenic
7
A section of the Periodic Table is provided.
What two things can you tell from this section of the periodic table? (select two answers)
-
A
The chemical symbol of the element.
-
B
How reactive the element is.
-
C
The name of the element
-
D
The element's chemical structure.
8
The provided table shows the properties of four different sample materials.
A student has substance with a density of 2.0g/cm3. Which sample does the student have?
-
F
Sample 1
-
G
Sample 2
-
H
Sample 3
-
J
Sample 4
9
The smallest particle of an element is known by which of the following terms?
-
A
Symbo
-
B
Chemical
-
C
Atom
-
D
Compound
10
A _________ consists of atoms of different kinds of elements that are bound together and are pure substances represented by a chemical formula.
-
F
Mixture
-
G
Molecule
-
H
Compound
-
J
Oxygen
11
The table shows the properties of three classifications of elements?
|
(A) __________ |
(B) __________ |
(C) __________ |
|
No luster |
Shiny or dull |
Shiny |
|
Brittle |
Usually brittle |
Malleable |
|
No conductivity |
Semi-conductors |
Good conductors |
What are the best headings for the columns A, B, and C?
-
A
A- Metals; B- Non-Metals; C- Metalloids
-
B
A- Non-metals; B- Metalloids; C- Metals
-
C
A- Metals; B- Metalloids; C- Non-metals
-
D
A- Non-metals; B- Metals; C- Metalloids
12
CH4 + 2O2
How many different elements are represented in the chemical formula?
-
F
7
-
G
5
-
H
4
-
J
3
13
Which of the following characteristics is shared by all chemical reactions?
-
A
Produces a precipitate
-
B
Shows a color change
-
C
Releases heat energy
-
D
Forms a new substance
14
A student added white crystals to a clear liquid. The crystals dissolved in the liquid. After a few seconds, the liquid became quite warm and then turned bright pink in color. The first indication that a chemical change was taking place could be observed when-
-
F
The crystals were added to the liquid.
-
G
The crystals dissolved in the liquid.
-
H
The temperature of the liquid increased
-
J
The color of the mixture changed.
15
The elements Argon, Krypton, Xenon are all non-metals. Which properties would these elements have in common? (select two answers)
-
A
Good conductor of thermal energy
-
B
Dull appearance
-
C
Poor conductor of electricity
-
D
Soft and malleable
16
The diagram shows the location of some elements on the Periodic Table.
Which element shares the properties of both metals and nonmetals?
-
F
Oxygen (O)
-
G
Calcium (Ca)
-
H
Arsenic (As)
-
J
Hydrogen (H)
17
Which two elements are the most common in the rocky outer surface that makes up the Earth’s lithosphere?
-
A
Silicon and oxygen
-
B
Oxygen and hydrogen
-
C
Nitrogen and oxygen
-
D
Oxygen and carbon
18
The oceans are primarily composed of which two elements?
-
F
Carbon and hydrogen
-
G
Calcium and silicon
-
H
Hydrogen and oxygen
-
J
Nitrogen and phosphorus
19
The atmosphere of Earth is comprised mostly of oxygen and –
-
A
Carbon
-
B
Hydrogen
-
C
Silicon
-
D
Nitrogen
