Grade 8:Science: Matter

Question 1

A wish can be classified as _?_.

Accepted Answer

not matter

Question 2

The _?_ is the most massive part of an atom.

Accepted Answer

proton, nucleus

Question 3

Matter is anything that you can think and takes up space.

Accepted Answer

False

Question 4

Metalloids are elements that have characteristics of both metals and nonmetals.

Accepted Answer

True

Question 5

Hydrogen can be classified as _?_.

Accepted Answer

matter

Question 6

On the periodic table, metalloids are found _?_.

Accepted Answer

between the metals and nonmetals

Question 7

The _?_ are malleable, have luster, and are good conductors.

Accepted Answer

metals

Question 8

Most elements are _?_.

Accepted Answer

metals

Question 9

Isotopes can have the same _?_.

Accepted Answer

atomic number

Question 10

An example of a uniform mixture is _?_.

Accepted Answer

air

Question 11

A _?_ has no luster and is a poor conductor.

Accepted Answer

nonmetal

Question 12

J. J. Thomson's experiments with cathode rays led to the discovery of the neutron.

Accepted Answer

False

Question 13

The formula for ammonia contains three atoms of hydrogen (H) for every atom of nitrogren (N).

Accepted Answer

NH3

Question 14

Most elements found on the left side of the periodic table are _?_.

Accepted Answer

metals

Question 15

_?_ are the simplest materials in matter.

Accepted Answer

Elements

Question 16

Air is an example of a _?_.

Accepted Answer

uniform mixture

Question 17

The elements in a _?_ are always combined in the same proportion by mass.

Accepted Answer

compound

Question 18

Rutherford's experiment showed that most of an atom is made up of _?_.

Accepted Answer

empty space

Question 19

An atom of the element with atomic number 6 has _?_.

Accepted Answer

6 protons in its nucleus

Question 20

The atomic number of an element tells the number of _?_ in the nucleus of an atom.

Accepted Answer

protons

Question 21

Water is an example of a(n) _?_.

Accepted Answer

compound

Question 22

A compound with the formula C6H12O6 is made up of three atoms.

Accepted Answer

False

Question 23

During Chadwick's experiments, streams of _?_ were unaffected by an electric field.

Accepted Answer

neutrons

Question 24

Heat can be classified as _?_.

Accepted Answer

not matter

Question 25

Each of these is an example of matter except a(n) _?_.

Accepted Answer

beam of light

Question 26

The periodic table lists _?_.

Accepted Answer

elements

Question 27

A property not associated with metals is _?_.

Accepted Answer

brittleness

Question 28

Light can be classified as _?_.

Accepted Answer

not matter

Question 29

Many _?_ can conduct heat and electricity, but they are not the best conductors.

Accepted Answer

metalloids

Question 30

A(n) _?_ is a particle in an atom with a positive charge.

Accepted Answer

proton

Question 31

Fruit salad is an example of a non-uniform mixture.

Accepted Answer

True

Question 32

_?_ developed a model called the atomic theory of matter.

Accepted Answer

John Dalton

Question 33

Isotopes of an element contain different numbers of _?_.

Accepted Answer

neutrons

Question 34

Matter that is not considered to be a single substance is a(n) _?_.

Accepted Answer

mixture

Question 35

A mixture is nonuniform if _?_.

Accepted Answer

you can see its individual parts

Question 36

The sun can be classified as _?_.

Accepted Answer

matter

Question 37

Any atom can be classified as _?_.

Accepted Answer

matter

Question 38

An element is made up of only one kind of _?_

Accepted Answer

atom

Grade 8:Science: Matter

Questions 38

Grade 8:Science: Matter

Questions 38