Show:
The Atom
Waves
Classifications of Matter
Periodic Table
Other
100

True or false: Science is reliable because it is based on evidence, but it can change if new evidence is found.

True

100

What is the lowest point of a wave called?

Trough
100

Is fruit salad a homogenous mixture or a heterogeneous mixture?

Heterogeneous mixture

100

Name one way the periodic table is organized

Teacher discretion

Groups, periods, order of increasing atomic mass, increasing atomic number, metals and nonmetals, etc

100

True or false: Everything we know in science is permanent and will never change.

False

200
An element has 9 protons, 10 neutrons, and 9 electrons, what element is this?

Fluorine

200

What term refers to the material or substance hat waves travel through?

Medium

200

Is milk a pure substance or a mixture?

Mixture

200

How many valence electrons does Gallium (Ga, atomic number 31) have?

3

200

DAILY DOUBLE: Will the elements nitrogen and oxygen form an ionic bond or a covalent bond?

Are their valence electrons being transferred or shared?

Covalent - two nonmetals

Shared - because covalent

300

Which subatomic particle determines the identity of the element?

Protons

300

As frequency decreases, what happens to energy?

Energy also decreases
300

What is an example of a pure substance - compound?

Teacher discretion: Water (H2O), salt (NaCl)

300

Is Zirconium (Zr, atomic number 40) a metal or nonmetal?

Metal

300

Is odor a physical or chemical property?

Physical

400

An atom has 6 protons, 7 neutrons, and 2 electrons, what is its charge?

+4

400

All waves transfer __________.

Energy

400

What are the two categories that ALL matter can be sorted into?

Pure substances and mixtures

400

What is the reason why noble gases are not reactive?

Because they have a full octet/they are satisfied

400

What type of chemical reaction is shown below?

___ KBr + ___ Ag -> ___ AgBr2 + ___K

single replacement

500

How many protons, neutrons, electrons are in Aluminum (Al, atomic number 13)

P=13

N=14

e=13

500

True or false: Sound waves require a medium to travel.

True

500

What is an example of a homogenous mixture?

Teacher discretion

Milk, lemonade, broth, pudding, etc

500

What are three qualities of nonmetals?

Brittle, poor conductors, not lustrous

500

Balance the following reaction:

___ KBr + ___ Ag -> ___ AgBr2 + ___K

_2__ KBr + __1_ Ag -> __1_ AgBr2 + __2_K