States of Matter
Independent vs Dependent Variables
Elements, Compounds, mixtures
The Periodic Table
Heat
100

What is matter?

Anything that has mass and takes up space

100

Ms. LaPlaca is conducting an experiment to determine how the amount of sunlight affects the growth of a plant.

What is the INDEPENDENT VARIABLE? 

The amount of sunlight the plant gets

100

List the three phases of matter in order from the GREATEST ATTRACTIVE FORCES between particles to the LEAST ATTRACTIVE FORCES between particles.

Solid -> Liquid -> Gas

100

Which group are the noble gases in?

Group 18

100

We use a thermometer to measure this kind of energy

Thermal Energy

200

What is mass?

The amount of matter something has

200

Ms. LaPlaca wanted to see if increasing the amount of salt in a plant's water will affect the plant's height.

What is the DEPENDENT VARIABLE? 

The plant's height

200

All matter is made up of 

Atoms

200

What is an atomic number?

the number of protons an atom has

200

Describe the relationship between kinetic energy and thermal energy in an object

The MORE kinetic energy, the MORE thermal energy

300

What is the smallest unit of matter?

An atom

300

Ms. LaPlaca is conducting an experiment to determine how the amount of sunlight affects the growth of a plant. 

List two CONSTANTS (these stay the same to make the experiment fair) 

Answers NOT accepted:

- the amount of sunlight

- the height of the plant

300

Iron (Fe) is a(n)

Element

300

Which element on the periodic table has the atomic number 24?

Chromium (Cr)

300

Describe what happens to the density of air as its temperature lowers (gets cooler)

The density increases, causing the cool air to sink

400

After a chemical reaction, the mass of the reactant (before reaction) and the mass of the product (after the reaction)____

Stays the same

400

Ms. LaPlaca is conducting an experiment to determine how the amount of sunlight affects the growth of a plant. 

Hours of Sunlight (hours)    Height (cm)

12 hours                              12 cm

24 hours                              30 cm

36 hours                              40 cm 

What were the results of this experiment? 

The more sunlight the plants got, the more growth they experienced 

400

NaCl (Sodium Chloride) is considered a

Compound

400

Based on its position in the Periodic Table, at room temperature, cadmium (Cd) is most likely a

Metal

400

Ms. Rivera's science classroom is always hot in the afternoon after recess. Using the concept of RADIATION, explain why this could be the case

Acceptable answers:

- The heaters are radiating thermal energy into the classroom

- The sun is radiating thermal energy through the window

500

This property of matter describes how much mass is contained in a given volume and is calculated using the formula mass divided by volume.

Density

500

In an experiment testing how the amount of sunlight affects the growth of a plant, this is the variable that the scientist measures to determine the outcome.

The DEPENDENT variable

500

Destiny combines sand and salt in a beaker. This is considered which kind of mixture?

Heterogenous

500

Why do some chemical symbols not match their names?

The names were originally in Latin

500

Why can't thermal energy move through space by conduction and convection?

There are no particles in a vacuum (space) and so the particles cannot bump into each other (conduction) or flow (convection)