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Science 8th Grade BK > Unit 6 > Flashcards

Unit 6 Flashcards

0
Q

What pH #’s are acids?

A

1, 2, 3, 4, 5, 6

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1
Q

What two things combined forms salt?

A

Metals and nonmetals

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2
Q

What pH # is a neutral?

A

7

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3
Q

What pH #’s are basics?

A

8, 9, 10, 11, 12, 13, 14

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4
Q

How do you find the # of protons by only using the element?

A

It is the same as the Atomic #

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5
Q

How do you find the # of neutrons by only using the element?

A

Atomic Mass - Atomic #

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6
Q

How do you find the Atomic Mass by only using the element?

A

Protons + Neutrons

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7
Q

What does the Atomic # equal to?

A

Protons OR Neutrons

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8
Q

What do all Groups/Families have in common?

A

They have similar properties (Same amount of Valence Electrons)

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9
Q

What are four physical properties of metals?

A

Malleable, Luster, Ductile, and Conductors

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10
Q

What are four properties of nonmetals?

A

Brittle, Dull, Insulators, Many Colors

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11
Q

What is a heterogeneous mixture?

A

Mixtures that aren’t uniform (the same; different). (Chex Mix (You get different food items every time you reach in the bag))

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12
Q

What is a Colloid?

A

A mixture that has particles small enough that the particles don’t settle, yet large enough that they can block out light
Ex. Jell-O, Smoke, and Milk

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13
Q

What is a Suspension?

A

A mixture with large particles that separate by themselves over time
Ex. Snow globe, and muddy water

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14
Q

What is a solution?

A

A mixture whose particles are so small, they block light or settle to the bottom
Ex. Kool-Aid, Iced Tea, Lemonade

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15
Q

What is a homogeneous mixture?

A

Mixtures that spread out evenly

Ex. Pouring a glass of Kool-Aid

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16
Q

Where is a metal located on the Periodic Table?

A

The left side of the zigzagging line

17
Q

Where is a metalloid on the Periodic Table?

A

The zigzagging line

18
Q

Where is a nonmetal on the Periodic Table?

A

The right side of the zigzagging line

19
Q

What column are the Noble Gases in?

A

The 18th column

20
Q

What column are Alkali’s in?

A

The 1st column

21
Q

What column are the Halogens in?

A

The 17th column

22
Q

What are some properties of basics?

A

Feels Slippery, Bitter, Corrosive, Not Reactive W/ Metals, OH- Ions,
pH > 7
Ex. Soap, Cleaning Products

23
Q

What are some properties of acids?

A

Tastes Sour, H+ Ions, Reactive W/ Metals, Conducts Electricity, pH < 7
Ex. Fruits and Juices, Vinegar

24
Q

Fill in the blanks

Acid + Base = ________ & __________. This is a _________ with a pH of ________

A

Salt
Water
Neutral
7

25
Q

Fill in the blanks

A base turns _________ litmus paper to _________

A

Red

Blue

26
Q

Fill in the blanks

An acid turns _______ litmus paper to _______

A

Blue

Red

27
Q

What is a Pure Substance?

A

A substance that has definite physical and chemical properties. They are made up of one type of particle.

28
Q

What is a Compound?

A

Something made up of different kinds of atoms chemically combined.
Ex. Water (Hydrogen and Oxygen)

29
Q

What are Physical Properties?

A

A characteristic of a substance that can be observed and measured
w/ out changing the identity of the substance

30
Q

What are some examples of physical properties?

A

Density, Smell, Volume, Ductility, Malleability, Mass, Luster, Weight, Area, etc.

31
Q

What are chemical properties?

A

A substances ability to change into a new substance w/ new and different properties

32
Q

What is the gravitational pull affected by?

A

The size of the planet

33
Q

What is the equation to find density?

A

You got to LOVE your density:
m
D= —— (Density= Mass➗Volume)
V

34
Q

What is mass and what is the unit?

A

The amount of matter in an object

Grams

35
Q

What is weight and what is the unit?

A

Measure of the gravitational pull

Newtons

36
Q

What are the states of matter?

A

Solid
Liquid
Gas
Plasma

37
Q

When are particles in motion?

A

All the time

38
Q

Does mass change if you go to a different planet?

A

NO!!

39
Q

What are two things that don’t depend on sample size?

A

Melting and Boiling Point

40
Q

What has to happen to be weightless?

A

There has to be zero gravity

Science 8th Grade BK (3 decks)

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