Science SEP

Question 1

Anything that has mass or takes up space:

Answer 1

Matter

Question 2

The smallest particle of an element:

Answer 2

Atom

Question 3

A pure substance made of only one kind of atom:

Answer 3

Element

Question 4

A particle in the nucleus of an atom that has a positive electric charge:

Answer 4

Proton

Question 5

A particle in the nucleus of an atom that has no electrical charge:

Answer 5

Neutron

Question 6

A negatively charged particle that occupies the outer part of an atom:

Answer 6

Electron

Question 7

The force that holds together the nucleus of the atom:

Answer 7

Strong Force

Question 8

The center of the atom which contains the protons and neutrons:

Answer 8

Nucleus

Question 9

Located at the top of a symbol card. Shows how many protons are in an element:

Answer 9

Atomic Number

Question 10

Abbreviation of the element’s name

Answer 10

Atomic Symbol

Question 11

Very energetic, negatively charged particles that move in all directions around the nucleus of an atom are:

Answer 11

Electrons

Question 12

Hydrogen and oxygen are classified as:

Answer 12

Elements

Question 13

Which of the following is an example of a homogeneous mixture?
a milk
b pizza
c Chex mix
d Italian dressing

Answer 13

Milk

Question 14

Which of the following is an example of a heterogeneous mixture?
a urine
b apple juice
c Chex mix
d milk

Answer 14

Chex mix

Question 15

A group of two or more atoms held together by bonds:

Answer 15

Molecule

Question 16

A formula giving the number of atoms of each of the elements present in one molecule of a specific compound:

Answer 16

Molecular (or chemical) Formula

Question 17

A substance made of two or more elements but they are NOT chemically combined:

Answer 17

Atomic Symbol

Question 18

A mixture where it is difficult or impossible to see the different parts:

Answer 18

Homogenous

Question 19

If I know the atomic number, what else do I know about the element?

Answer 19

Number of protons and electrons

Question 20

How many hydrogen atoms are in the compound C6H12O6?

Answer 20

12 hydrogen atoms

Question 21

What is a mixture that is not chemically bonded?

Answer 21

Heterogenous

Question 22

What is an organized grid of pure substances?

Answer 22

Periodic Table of Elements

Question 23

What particles are contained in the nucleus of an atom?

Answer 23

Protons and neutrons

Question 24

What is the difference between a compound and a mixture?

Answer 24

Compounds are chemically bonded atoms and mixtures can include different atoms or molecules.

Question 25

Which is an example of a mixture?
a K
b F + H2O
c Na
d C6H12O6

Answer 25

b F + H2O

Question 26

When the element Iron bonds together with the element Oxygen it forms Ferrous Oxide (FeO), which statement describes the outcome?

Answer 26

Ferrous Oxide (FeO) is a compound.

Question 27

If I have a compound molecule with 4 Hydrogen atoms in it and 1 Oxygen atom, which molecular formula below represents the molecule?

Answer 27

H4O

Question 28

Which of the following items are considered pure substances?

Answer 28

Element