Quiz about Unit 3 Review

Question 1

Something that takes up space and has mass.

Accepted Answer

matter

Answer

volume

Answer

mass

Answer

density

Question 2

Yeimel is describing the physical properties of his new gaming chair. Which two physical properties can he determine without using any measuring instruments?

Accepted Answer

texture and color

Answer

taste and odor

Answer

volume and temperatue

Answer

shape and mass

Question 3

Which of the following is a pure substance?

Accepted Answer

Water

Answer

Salad

Answer

Chocolate milk

Answer

All of them

Question 4

Question 4.

Accepted Answer

Compound

Answer

Element

Answer

Homogeneous Mixture

Answer

Heterogeneous MIxture

Question 5

What is it?

Accepted Answer

Mixture

Answer

Pure Substance

Question 6

What is it?

Accepted Answer

Pure Substance

Answer

Mixture

Question 7

When there is 2 or more atoms combined together

Accepted Answer

Compound

Answer

Element

Answer

Homogeneous Mixture

Answer

Heterogeneous Mixture

Question 8

A group of 2 or more items, that are not chemically combined

Accepted Answer

Mixture

Answer

Pure Substance

Question 9

Which term describes when a substance is changed from a liquid to a gas?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Filtration

Answer

Precipitation

Question 10

Sand and salt are placed in the bottom of a beaker filled with water. The beaker is heated, and the water is stirred.

What will happen to the salt and sand?

Accepted Answer

The salt will dissolve, and the sand will settle

Answer

The sand and salt will settle to the bottom.

Answer

The sand and salt will dissolve in the water

Answer

The sand will evaporate, and the salt will dissolve.

Question 11

The central region of an atom where its neutrons and protons are is called it's __________ .

Accepted Answer

nucleus

Answer

electron cloud

Answer

core

Answer

center

Question 12

When you heat matter, what happens to the atoms and molecules?

Accepted Answer

they move faster

Answer

they move slower

Answer

they stop moving

Answer

they stay the same

Question 13

All matter is made of what

Accepted Answer

atoms

Answer

energy

Answer

electrons

Answer

compounds

Question 14

_________ is a pure substance that is made from a single type of atom.

Accepted Answer

Element

Answer

Atom

Answer

Compound

Answer

Mixture

Question 15

What is gold?

Accepted Answer

element

Answer

compound

Answer

mixture

Question 16

What is water (H₂O)?

Accepted Answer

compound

Answer

element

Answer

mixture

Question 17

This picture is water...what two things are true about it.

Accepted Answer

compound

Accepted Answer

molecule

Answer

atom

Answer

element

Question 18

Which part of an atom is POSITIVELY charged?

Accepted Answer

protons

Answer

neutrons

Answer

electrons

Answer

atoms

Question 19

What part of an atom is NEGATIVELY charged?

Accepted Answer

electrons

Answer

protons

Answer

neutrons

Answer

atoms

Question 20

Which part of an atom has no charge?

Accepted Answer

neutrons

Answer

protons

Answer

electrons

Answer

atoms

Question 21

a substance that cannot be separated or broken down into simpler substances by chemical means

Accepted Answer

element

Answer

volume

Answer

neutron

Answer

mass

Question 22

Which of the following is an element?

Accepted Answer

oxygen

Answer

salt

Answer

vinegar

Answer

water

Question 23

How is an element different from a compound?

Accepted Answer

an element is made of a single type of atom, and a compound is made of two or more atom types

Answer

an element is highly reactive, and a compound is stable

Answer

an element exists in any state, and a compound is only a liquid

Answer

an element contains multiple substances, and a compound contains only one pure substance

Question 24

Which elements in the periodic table have similar properties?

Accepted Answer

two elements in the same group

Answer

a metal and a noble gas

Answer

a metal and a non metal

Answer

two elements in the same period

Question 25

Based on the periodic table of elements, which of the following sets of elements have similar properties?

Accepted Answer

Cl, Br, I

Answer

Pb, Sn, Kr

Answer

Ne, N, O

Answer

O, S, N

Question 26

What is the atomic number of an element based upon?

Accepted Answer

number of protons in its nucleus

Answer

mass of it's nucleus

Answer

number of electrons around it's core

Answer

number of neutrons in its nucleus

Question 27

A student notices that a basketball seems to act differently depending on whether the game is being played on a court with a wooden floor, on a concrete driveway, or on a blacktop in the park. they student hypothesizes that the surface on which a ball is bounced affects the height of the bounce.

How can the student design an experiment to test the hypothesis?

Accepted Answer

The student should drop the same ball from the same height on 3 different surface and have someone measure the height of each bounce

Answer

The student should drop the same ball from 3 different heights and have someone measure the height of each bounce

Answer

The student should drop 3 different balls from the same height and have someone measure the height of each bounce

Answer

The student should drop 3 different balls from the same height on 3 different surfaces and have someone measure the height of each bounce

Question 28

Ena is measuring the pH of various liquids to see if they are acids or bases. Although she is following the same procedure each time, she notices that when she tests a particular liquid she obtains results she does not expect. She is not sure that the result is accurate.

What should Ena do to improve the reliability of the data she collects?

Accepted Answer

perform repeated trials on each liquid

Answer

change her hypothesis

Answer

measure a smaller volume of each sample

Answer

research more information about acids and bases

Question 29

Devin is doing an investigation to address the question of how temperature affects the rate of crystal growth. He has 6 jars and adds the same amount of warm water to each jar. Then he adds salt to each jar, enough to make a saturated solution, and stirs until the salt dissolves completely. He observes the jars for several days.

Which experimental design allows for the collection of the evidence Devin needs to address this question?

Accepted Answer

he puts 3 jars in the fridge and 3 jars at room temperature and, records the day the crystals appear

Answer

He leaves all 6 jars on the counter and records the temperature and day the crystals appear

Answer

He puts all 6 jars in the fridge, and records the day and temperature the crystals appear

Answer

He puts 5 jars at room temperature and 1 in the fridge, and records the day the crystals appear

Question 30

What would happen to blue litmus paper if it came into contact with an acid?

Accepted Answer

It would turn red

Answer

It would turn green

Answer

It would stay blue

Answer

It would turn pink

Question 31

Which of the following pH values would be the weakest acid?

Accepted Answer

6

Answer

1

Answer

3

Answer

5

Question 32

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

Accepted Answer

base

Answer

acid

Answer

enzyme

Answer

fatty acid

Question 33

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

Accepted Answer

9

Answer

3

Answer

7

Answer

5

Question 34

Which option below places the pH values in the correct order, from WEAKEST ACID to STRONGEST ACID?

Accepted Answer

6,4,3,1

Answer

1,4,5,6

Answer

7,9,11,14

Answer

13,12,10,8

Question 35

A substance that produces hydroxide ions (OH-) in solution is a

Accepted Answer

Base

Answer

Acid

Answer

Neutral

Answer

Bitter

Question 36

A substance that produces H+ ions in solution is a (n)

Accepted Answer

Acid

Answer

Base

Answer

Neutral

Answer

sour

Question 37

Lemons and pickles taste sour, this property indicates that they are __________.

Accepted Answer

Acids

Answer

Bases

Answer

Neutral

Answer

None of the above

Question 38

What does pH measure?

Accepted Answer

the amount of hydrogen (H⁺) ions

Answer

the amount of hydroxide (OH^-) ions

Answer

amount of water

Answer

all of the above

Question 39

What are the two types of Mixtures

Accepted Answer

Homogenous and Heterogeneous

Answer

Elements and Subatomic Particles

Answer

Protons and Electrons

Answer

Atoms and Compounds

Question 40

A substance that contains only one type of atom is a(n)

Accepted Answer

element

Answer

compound

Answer

heterogeneous mixture

Answer

homogeneous mixture

Question 41

Which of the following is a heterogeneous mixture?

Accepted Answer

beach sand

Answer

salt water

Answer

sugar water

Answer

soda

Question 42

A mixture that contains two or more substances blended evenly throughout

Accepted Answer

homogeneous mixture

Answer

heterogeneous mixture

Answer

suspension

Answer

colloid

Question 43

A chocolate chip cookie is an example of:

Accepted Answer

Heterogeneous mixture

Answer

Substance

Answer

Compound

Answer

Homogeneous mixture

Question 44

Italian Salad Dressing is a . . .

Accepted Answer

heterogeneous mixture

Answer

homogeneous mixture

Answer

Pure Substance

Answer

Compound

Question 45

A pure substance containing two or more types of elements that are chemically combined is called?

Accepted Answer

Compound

Answer

Mixture

Answer

Element

Answer

Solution

Question 46

Elements and Compounds are classified as _______.

Accepted Answer

Pure substances

Answer

Heterogeneous mixtures

Answer

Homogeneous mixtures

Answer

Unpure substances

Question 47

What is the smallest unit of matter?

Accepted Answer

An atom

Answer

A cell

Answer

A particle

Answer

A compound

Question 48

This picture represents which of the following?

Accepted Answer

mixture

Answer

element

Answer

compound

Question 49

NH₃ is a:

Accepted Answer

Compound

Answer

Mixture

Answer

Element

Answer

Particle

Question 50

The esophagus is the tube that connects the mouth to the stomach. Heartburn occurs when some of the stomach juices flow backwards up the esophagus. To help relieve heartburn, a person should take medicine that is

Accepted Answer

basic

Answer

neutral

Answer

acidic or basic.

Answer

acidic

Question 51

Which element has properties similar to Calcium (Ca)?

Accepted Answer

Magnesium

Answer

Sodium

Answer

Potassium

Question 52

How many neutrons can be found in an atom of Na (Sodium)?

Accepted Answer

12

Answer

11

Answer

22.99

Answer

23

Question 53

Which color on the image of the periodic table corresponds with the alkaline earth metals?

Accepted Answer

teal

Answer

blue/green

Answer

yellow

Answer

dark yellow

Question 54

What subatomic particle is positive and found in the nucleus?

Accepted Answer

proton

Answer

electron

Answer

neutron

Answer

quark

Question 55

What are the red elements (those on the left)?

Accepted Answer

metals

Answer

nonmetals

Answer

metalloids

Question 56

What are the blue elements (those on the right)?

Accepted Answer

nonmetals

Answer

metals

Answer

metalloids

Question 57

What subatomic particle is negative and found outside the nucleus?

Accepted Answer

electron

Answer

proton

Answer

neutron

Question 58

How many elements are on the current periodic table?

Accepted Answer

118

Answer

63

Answer

108

Answer

128

Question 59

The number at the top of each square on the periodic table is the ...

Accepted Answer

atomic number

Answer

atomic mass

Answer

Chemical Symbol

Answer

Element Name

Question 60

The number at the bottom of each square on the periodic table is the ...

Accepted Answer

atomic mass

Answer

atomic number

Answer

chemical symbol

Answer

element name

Question 61

What is the atomic number of Barium, Ba? (enlarge the periodic table)

Accepted Answer

56

Answer

20

Answer

38

Answer

88

Question 62

If an atom has 10 electrons, how many protons does it have?

Accepted Answer

10

Answer

0

Answer

1

Answer

5

Question 63

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

Accepted Answer

6

Answer

10

Answer

4

Answer

8

Question 64

Which of the following is a true statement?

Accepted Answer

Periods form horizontal rows; groups form vertical columns

Answer

Groups form horizontal rows; periods form vertical columns

Answer

Categories form horizontal rows; gases form vertical columns

Answer

Gases form horizontal rows; categories form vertical columns

Unit 3 Review

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