Unit 2 Matter

Question 1

In chemical equations the Reactants are on the Right or the Left of the arrow?

Accepted Answer

Left

Question 2

The ability to tarnish

Accepted Answer

Chemical Property

Question 3

Luster, Malleability, Conductivity are examples of

Accepted Answer

Physical Properties

Question 4

The ability to catch fire is...

Accepted Answer

Chemical Property

Question 5

The number of valence electron shells is determined by the what on the periodic table

Accepted Answer

period

Question 6

What is the smallest unit of an element that still holds the properties of the element?

Accepted Answer

An Atom

Question 7

Was the first person to organize the periodic table based mostly on physical properties

Accepted Answer

Dmitri Mendeleev

Question 8

Which of these best explains how the atoms of two different elements would compare?

Accepted Answer

Atoms have different numbers of particles

Question 9

Baking a cake is

Accepted Answer

Chemical Change

Question 10

Reactivity, flammability, rust, and tarnishing are examples of?

Accepted Answer

Chemical properties

Question 11

An object with a density greater than the density of water will float?

Accepted Answer

False, it will sink

Question 12

In H2. The 2 is an example of

Accepted Answer

subscript

Question 13

A baby's first hair cut is

Accepted Answer

Physical Change

Question 14

This is a picture of a???

Accepted Answer

Compound of two different elements

Question 15

This contains a variety of elements and compounds that are NOT chemically combined.

Accepted Answer

A mixture

Question 16

Greek philosopher who is credited with first using the term “atomos”“not able to be divided”

Accepted Answer

Democritus

Question 17

Check one that are considered a Pure Substance

Accepted Answer

Compounds, Elements

Question 18

The formula for Density is?

Accepted Answer

D=m/v

Question 19

Which statement about matter is true?

Accepted Answer

All matter, so all of everything is made of elements

Question 20

The smallest unit of an element that maintains the properties of that element is?

Accepted Answer

An atom

Question 21

Stretching a piece of rubber is

Accepted Answer

Physical Change

Question 22

The area around the nucleus of an atom where scientist assume the electrons are located.

Accepted Answer

electron cloud

Question 23

Which of these statements is true about nitrogen atoms

Accepted Answer

Atoms are the smallest particles of the element.

Question 24

Electrical conductivity, density, solubility, boiling and melting point, are examples of...

Accepted Answer

physical properties

Question 25

A metal's luster

Accepted Answer

Physical Property

Question 26

Which statement about atoms and molecules is correct?

Accepted Answer

A molecule is made up of two atoms of the same element.

Question 27

Which of these is a true statement about compounds?

Accepted Answer

Compounds are formed by chemical reactions.

Question 28

Provides a description of how a process in nature occurs. based on observations and data.

Accepted Answer

Scientific Explanation

Question 29

These have definite physical and chemical properties, no matter how much or little of it

Accepted Answer

Pure Substances

Question 30

Matter's ability to catch fire

Accepted Answer

Chemical Property

Question 31

The ability to react to an acid(vinegar) is

Accepted Answer

Chemical Property

Question 32

in the equation 2Fe + 3H2SO4--- Fe(SO4)3 + H2. The "2" before the Fe is called?

Accepted Answer

Coefficient

Question 33

Spraying your hair fun colors is an example of a...

Accepted Answer

Physical Change

Question 34

The systematic study of natural events and conditions

Accepted Answer

Science

Question 35

Is the variable that changes as a direct result of the manipulation of other variables.

Accepted Answer

dependent variable

Question 36

Is the factor in an experiment that is deliberately manipulated, to test the affect

Accepted Answer

independent variable

Question 37

A mixture that does NOT have a uniform composition. It is NOT evenly dispersed.

Accepted Answer

heterogeneous

Question 38

substance that has a definite physical and chemical properties, regardless of the amount

Accepted Answer

pure substance

Question 39

Is a system of ideas that explains many related observations. Its modified but rarely rejected

Accepted Answer

Scientific Theory

Question 40

This is made up of one or more of the same kind of atoms chemically combined

Accepted Answer

an element

Question 41

Which of the families or groups on the P.T. is NOT reactive?

Accepted Answer

Nobel Gases

Question 42

What are the three main branches of science?

Accepted Answer

Life, Physical, Earth

Question 43

Elements that are NOT shiny and do NOT conduct heat/electricity well are called?

Accepted Answer

nonmetals

Question 44

Made up of different kinds of atoms chemically combined.

Accepted Answer

A compound

Question 45

Is a testable idea or explanation that leads to a scientific investigation.

Accepted Answer

hypothesis

Question 46

Matter's ability to bend easily (malleability)

Accepted Answer

Physical Property

Question 47

Your grandmas house burning down

Accepted Answer

Chemical Change

Question 48

Group 2 on the periodic table are known as the?

Accepted Answer

Alkaline Earth Metals

Question 49

each horizontal row on the periodic table is called a

Accepted Answer

period

Question 50

SnO2+2H2------>Sn +2H2O. The PRODUCTS are on the Right or the Left?

Accepted Answer

Right

Question 51

The ability to react with another substance (reactivity)

Accepted Answer

Chemical Property

Question 52

Each element in a group have the same number of what in their outer shell.

Accepted Answer

Valence Electrons

Question 53

A characteristic of a substance that can be observed and measured without changing its identity

Accepted Answer

physical property

Question 54

Group 18 on the periodic table are known as the?

Accepted Answer

Nobel gases

Question 55

Do you feel ready for this test? If no what should you do tonight?

Accepted Answer

Yes! I studied this weekend!, No, I need to study more tonight...

Question 56

A truck rusting is?

Accepted Answer

Chemical Change

Question 57

Describes a substance's ability to change into a new substance with diff properties

Accepted Answer

Chemical properties

Unit 2 Matter

Questions 57

Unit 2 Matter

Questions 57