5th - Science Unit 1 Lesson 1 combined

Question 0

What are the particles that move around the nucleus that have a negative charge called?

Answer 0

Electron

Question 1

What are the particles called in an atom’s nucleus that have a positive charge?

Answer 1

Protons

Question 2

Be able to explain why atoms usually have no charge.

Answer 2

Usually the number of electrons and protons are equal, so atoms have no overall charge.

Question 3

Dmitri Mendeleev created what?

Answer 3

The Periodic Table of elements

Question 4

Be able to read a box from the periodic table and answer questions.

Answer 4

P. 26-27.

1. Element Name
2. Element Symbol
3. Atomic Number

Question 5

How do you find the atomic mass unit or amu of an element?

Answer 5

To find the amu of an element, you add the number of protons and neutrons together.

Question 6

Where are the electrons located?

Answer 6

Within the space outside the nucleus of an atom.

Question 7

How do you find the atomic number of an element?

Answer 7

The atomic number of an element is the number of protons in it. ????

Question 8

How are elements classified in the periodic table?

Answer 8

There are four classification on the periodic table - metal, metalloid, nonmetal, and artificial.

Question 9

Be able to list the properties of elements.

Answer 9

One important property of elements is the state of matter at room temperature (solid, gases, or liquid). Another property of elements is the way they combine with other elements.

Question 10

Be able to find the atomic mass unit of an element.

Answer 10

P. 26 - 27

Question 11

What is the name of the microscope that uses a needle that is so sensitive that it can show single atoms?

Answer 11

The scanning tunneling microscope

Question 12

What is one important property of an element at room temperature?

Answer 12

State of matter

Question 13

Another important property of an element is the way that it does what with other elements?

Answer 13

Reacts

Question 14

What is the center of an atom?

Answer 14

Nucleus

Question 15

What makes up an atom?

Answer 15

An atom is made up of the NUCLEUS (the center of the atom) which includes PROTONS and NEUTRONS and ELECTRONS which move within the space outside the nucleus.

Question 16

An atom’s protons and neutrons have about the same mass, which is called what?

Answer 16

Atomic mass unit or amu

Question 17

Know what an electron microscope examines.

Answer 17

Special electron microscopes use electrons instead of light particles to examine a sample. They can show single atoms, or the arrangement of atoms.

Question 18

What charge do the neutrons have?

Answer 18

They have NO electric charge.

Question 19

What is the number of protons in an atom called?

Answer 19

Atomic number

Question 20

Special microscopes use what to show the arrangement of atoms?

Answer 20

Electrons

Question 21

Molecules have properties that are different than the what that they are formed from?

Answer 21

Elements ?

Question 22

What charge do the protons have?

Answer 22

They have a positive electric charge.

Question 23

What is matter made of?

Answer 23

Elements

Question 24

What two things do atoms need to have the same number of to have no overall charge?

Answer 24

Electrons and Protons

Question 25

What is a substance that cannot be broken down into simpler substances?

Answer 25

Element

Question 26

Where are the protons located?

Answer 26

In the nucleus of an atom.

Question 27

What are the particles called in an atom's nucleus that have no electric charge?

Answer 27

Neutrons

Question 28

What are two or more atoms joined into a single particle called?

Answer 28

Molecule

Question 29

What is the smallest unit of an element that has that element's properties?

Answer 29

Atom

Question 30

What are the properties of nonmetals?

Answer 30

Poor conductivity, dull, and brittle

Question 31

What are the properties of metals?

Answer 31

Shiny, luster, conductivity, and flexibility

Question 32

What charge do the electrons have?

Answer 32

They have a negative electric charge.

Question 33

Where do atoms link to form molecules?

Answer 33

When a molecule forms from elements, atoms link together through their electrons.

Question 34

If you add up the mass of all the protons and neutrons in an atom, what do you get?

Answer 34

Atomic mass

Question 35

The periodic table's columns group elements according to their what?

Answer 35

Atomic numbers

Question 36

Where are the neutrons located?

Answer 36

In the nucleus of an atom.

Question 37

Which element is most likely to be dull? Carbon, Aluminum, Mercury, or Sodium

Answer 37

Carbon because it is a nonmetal

Question 38

What is the smallest unit of an element that has the properties of that element?

Answer 38

Atom

Question 39

What is a measure of the amount of matter in an object?

Answer 39

Mass

Question 40

What is something that can be observed about an object or a group of object?

Answer 40

Property

Question 41

What is a particle in the nucleus of an atom that carries one unit of positive electric charge?

Answer 41

Proton

Question 42

What is the center of an atom, containing most of its mass?

Answer 42

Nucleus

Question 43

What is a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge?

Answer 43

Electron

Question 44

What is a particle in the nucleus of an atom that has no electric charge?

Answer 44

Neutron

Question 45

What is a material that cannot be broken down into any simpler substance through chemical reactions?

Answer 45

Element

Question 46

What is anything that has mass and takes up space?

Answer 46

Matter

Question 47

What is a particle that contains more than one atom joined together?

Answer 47

Molecule