Properties Of Matter Flashcards

1
Q

Formula for density, mass and volume

A

Mass=density×volume
Density=mass÷volume
Volume= mass÷volume

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2
Q

When is water it’s most dense

A

Water is most dense at 4°C (39°f)

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3
Q

Definition of matter

A

Anything that has weight and occupies up space

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4
Q

An atom is mainly composed of what 3 particles what charge do they carry

A

Protons(positive)
Electrons(negative)
Neutron(neutral)

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5
Q

A compound is created when?

A

When atoms of two or more different elements chemically combine EX water is a combination of hydrogen and oxygen

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6
Q

When matter is only composed of one atom it is called?

A

An element

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7
Q

What are 3 common properties of metal?

A

Malleability, ductility and conductivity

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8
Q

What compound is one of the most abundant?

A

Water H²O

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9
Q

What are these compound is CH4, C3H8, and C4H10

A

CH4=Natural gas
C3H8=propane
C4H10=butane

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10
Q

What is a mixture

A

molecules of different materials combined in a way that no chemical reaction takes place

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11
Q

What is a solution

A

Mixtures in which one substance is dissolved by another evenly, so the whole mixture is the same throughout (homogeneous)

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12
Q

2 parts of a solution, what are they and what do they do

A

Solute, it is dissolved
Solvent does the dissolving

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13
Q

Define brittle

A

Will not bend without breaking

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14
Q

Define ductile

A

Ability to be stretched or drawn into shape

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15
Q

Define malleable

A

Can be beaten,rolled or squeezed into shape

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16
Q

Define adhesion

A

Unlike molecules stick together

17
Q

Define capillary action

A

Tendency for adhesive liquids to flow into tight spaces

18
Q

Define surface tension

A

Surface skin forms on liquids due to cohesive forces

19
Q

Define cohesion

A

Like molecules stick together

20
Q

Define compressible and incompressible

A

Able to occupy smaller volume when forced by additional pressure
Can’t be compressed to reduce volume

21
Q

Define diffusion

A

Are able to spread when not under containment

22
Q

Solid to liquid is called

23
Q

Liquid to gas is called

A

Vaporization

24
Q

Gas to liquid is call

A

Condensation

25
Liquid to solid is called
Solidifcation
26
A solid to gas is call
Sublimation
27
Difference between physical and chemical change
Physical changes do not affect the chemical composition of a substance Chemical changes will produce a new substance or one with different characteristics
28
When water changes to steam how much does it's volume increase
1700x
29
Minescus in mercury will be?
A reverse minscuis a convex surface tension (sad face)
30
Meniscus in water will be
A concave meniscus
31
Define density
The mass of a substance per unit volume ( density of water is 1000kg/m³ or 62.4lb/ft³)
32
Density of air and water
Air 0.076lb/ft³ or 1.29kg/m³ Water 62.4lbs/ft³ or 1000kg/m³
33
Define relative density as it applies to solids and liquids. What is it for gases
The density of a solid or liquid relative to the equal volume of water RD 1 The density of gases relative to the equal volume of air RD of 1
34
Relative density of gases are what?
Compared to the RD of air, which is 1 eg: propane gas, an RD of 1.5, meaning it's 1.5 times heavier than air
35
What is the relative density of mercury
13.6
36
Define buoyancy
The force acting on any object immersed in a liquid
37
3 laws of buoyancy
1: A body sinks in a fluid if the mass of the fluid displaced is less than the mass of the body 2:If a body displaces a mass of fluid greater than it's own it will float 3: A body remains in equilibrium, neither rising nor sinking if the mass of fluid it displaces is equal to its own mass