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Chem Benchmark Review Flashcards | StudBud
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Chem Benchmark Review
Chem Benchmark Review
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Applied Chemistry for middle school
Flashcards
33 cards
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Practice quiz
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Questions
33
Answers
1
Which diagram shows the motion of molecules in an ice cube?
B
A
none
C
2
Put these states of matter in order from least energy to greatest energy.
solid, liquid, gas
solid, gas, liquid
liquid, gas, solid
liquid, solid, gas
3
Which of the following is an element on the Periodic Table?
Water
Air
Silver
Sodium Chloride
4
What name is given to a "well-mixed" mixture?
A molecule
A solution
A compound
A potion - yes, Jay, a potion
5
The elements on the Periodic Table are considered to be...
Solutions
Compounds
Mixtures
Pure Substances
6
Which diagram shows the motion of H2O molecules at 50 degrees Celsius?
C
A
B
D
7
In degrees
Celsius
, at what temperature does water boil?
32
O
2121
100
8
Which of the following does
NOT
describe an acid?
feels slippery
turns blue litmus paper red
tastes sour
has Hydrogen ions
9
Would this diagram best represent...
A compound?
An element?
A mixture?
bubbles?
10
Which of the following is
NOT
true about a solid?
It keeps its shape.
The molecules stay still.
it keeps its volume.
It has low energy.
11
The following diagram best represents...
A Liquid
A Solid
A Precipitate
A Gas
12
Any solution that is ABOVE a 7 on the pH scale can be considered ...
Neutral
Nasty
Acidic
#Basic
13
In the chemical equation below, Calcium Carbonate (CaCo3) is the...
Buffer
Product
Ion
Reactant
14
Which methods would be best to use when separating sand, salt and water?
A Magnet and Filter
A filter and Evaporation.
Fire and a Magnet
Borax and Evaporation
15
Which of the following is
NOT
a characteristic of a metal?
They are highly reactive.
They conduct electricity.
They are malleable and ductile.
They are dull and brittle.
16
In an atom, neutrons have this type of charge...
positive
neutral
static
negative
17
Which of the following is
NOT
a physical change?
burning paper
getting a fresh cut
Ice melting into water
Liquid water evaporating
18
As energy is added to a substance, its molecules ______________ and ______________.
spread apart and speed up
spread apart and slow down
freeze and slow down
shrink and collapse
19
Which area on the graph indicates a
changing
from a solid to a liquid?
B
D
C
A
20
Which point on the graph would indicate that the substance is COMPLETELY liquid?
B
A
C
D
21
Where are metals generally located on the periodic table?
On the left side
At the bottom
Every other row
On the right side
22
Elements are related to atoms in the following way...
Atoms are a distant cousin of elements.
Elements are made up of different atoms combining.
Atoms are made of several elements.
Elements are made up of similar atoms
23
Would this diagram best represent...
Bacteria?
A compound?
A mixture?
An element?
24
Each of the elements on the Periodic Table are made up of these...
Chemists' Hopes & Dreams
Different Molecules
Acids & Bases
Similar Atoms
25
When two or more elements combine chemically and take on new properties, they create...
a solution
a mixture
a compound
an element
26
Which of the following is
NOT
evidence of a chemical change?
new properties obtained
sweat evaporating from gym shorts
an explosion
production of carbon dioxide gas
27
How many products are there in the chemical equation shown?
0
2
3
1
28
On the Periodic Table, elements that are in the same group...
have similar properties
are friends.
Are found horizontally across the table
Have the same atomic mass.
29
Would this diagram best represent...
A mixture?
An element?
Mickey Mouse?
A compound?
30
in the following chemical equation, which of these is
NOT
a compound?
Organic Matter
Oxygen
Water
Carbon Dioxide
31
A solid that is produced when a chemical reaction between two liquids occurs is called...
A formula
A miracle
A metalloid
A precipitate
32
"Matter is neither created nor destroyed" according to...
The pH Scale
Dmitri Mendeleev
The Laws of Nature
The Law of Conservation of Matter
33
The atomic mass of an element is calculated by...
Adding the number of protons and number of electrons
Adding the number of protons and neutrons
Using the year it was born.
It is the same as the Atomic Number
