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8th Grade Chapter 1: Introduction to Matter Review Flashcards | StudBud
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8th Grade Chapter 1: Introduction to Matter Review
8th Grade Chapter 1: Introduction to Matter Review
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1
H
2
O, CO
2
, and NH
3
are all examples of....
Molecular Ratios
Physical Properties
Densities
Chemical Formulas
2
What is the attractive force that holds atoms together?
James Bond
Bail Bond
Chemical Bond
Glue
3
Sodium chloride dissolving in water is a physical change because
The salt is not a new substance and can be separated
The salt disappears in the water
The salt solution is a new substance
4
Which chemical reaction involves a slow dulling of a bright metal by mixing with a substance?
Oxidation
Tarnishing
Electrolysis
Combustion
5
Which chemical reaction involves a rapid combination of a fuel with oxygen to burn?
Oxidation
Tarnishing
Electrolysis
Combustion
6
A single type of matter that cannot be broken down
Mixture
Element
Density
Liquid
7
Type of matter that is not chemically bonded together.
compound
molecule
mixture
atom
8
Which type of energy is associated with the motion of particles in the object?
Mass Energy
Chemical Energy
Thermal Energy
Potential Energy
9
Ice cube melting on a counter is an example of.....
Exothermic Change
Endothermic Change
Density Column
Chemical Reaction
10
All matter in the universe is made of more than 100 different substances called....
Carbon
Mixtures
Atoms
Elements
11
What tells us that the mass before a reaction will be the same afterwards?
Law of Mass
Law of Conservation of Mass
Law of Matter
Law of Conversations
12
The physical property that makes metal pots good for cooking is
flexibility
heat conductivity
electrical conductivity
flammability
13
An endothermic reaction is
When the system gains heat and the temperature around decreases
When energy is either created or destroyed
When the system gains and loses heat, no temperature change
When the system gains heat and the temperature around increases
14
Anything that has mass and takes up space is considered to be...
Substance
Chemistry
Matter
Property
15
The study of matter and how it changes is called...
Astronomy
Biology
Forensics
Chemistry
16
Which of the following is an example of a chemical property?
Liquid
Red
Rusted
Bendable
17
A characteristic of a substance that can be observed without creating a new substance.
Volume
Physical Property
Solid
Chemical Property
18
Which of the following is NOT a physical change of matter?
Disolving
Freezing
Burning
Melting
19
Which of the following is not true about a pool of water and a piece of ice?
They have different chemical properties
They are in different states of matter
They have the same composition
They have different physical properties
20
Which of the following is the correct formula for calculating density?
volume x mass
mass x volume
mass / volume
volume / mass
21
An example of an exothermic reaction is
evaporation of water
light a match
instant cold pack
when two chemicals are added together
22
What is a characteristic of a substance that can only be observed if a new substance is created
Luster
Chemical Property
Physical Property
Melting
23
Which of the following is NOT an example of a physical property?
Flammability
Texture
Luster
Density
24
What is the basic particle from which all elements are made?
Bonds
Atoms
Reactants
Compounds
25
What is a measure of the amount of gravity pulling down on an object?
Mass
Density
Weight
Volume
