Question #1The wax candle below has a volume of 200

cm3 and a mass of 180 grams.

What is its density and will it float in water? Would half of it float or sink?

Answers:density = 0.9 g/ cm3 & it will float in water/ half will also float (density doesn’t depend on size)

Question #2Describe 2 physical properties of the tree

pictured below:

Answers:Green, brown, rounded on top, wide,

narrow at bottom, high mass

Question #3

Match the element with its descriptionA.Nonreactive 1. FB.Metal 2. OC.Halogen 3. MgD.Group 16 period 2 4. Ne

Answers:A – 4; B – 3; C – 1; D - 2

Question #4

A. In which phase of matter pictured below are the particles closest together?B. In which phase of matter are the particles moving the fastest?C. Which phase of matter has a definite volume but not a definite shape?

solid liquid gas

Answers:A: solid (except water) B: gas C: liquid

Question #5What would happen to an astronaut’s mass and weight on Mars (Mars has less gravitational pull

than Earth)?

Answers:Weight: less Mass: same

Question #6

Identify each characteristic below as either a chemical or physical property.

a. color and streak b. phase (solid, liquid, gas)c. reaction with oxygen (flammability)

Answers:A: physical B: physical C: chemical

Question #7

Identify each of the following elements:a.10 protons in its nucleusb.Group 1 Period 4c. Noble gas & atomic mass 84

Answer:a. Neon b. potassium (K) c. Krypton.

Question #8

A. What is true of the liquid at the top of the density column?

B. What is true of the liquid at the bottom of the density column ?

Answer:A: lowest density B: highest density

Question #9Use the mineral key to identify the following mineral:Density: 3.5 g/mL Hardness: 8Fizzes in acid: No Streak: colorless

Answer:topaz

Question #10Identify the term that goes with each definition below:

a. Force of gravity acting on an object’s mass.b. Property of matter that is determined by changing the

identity of a substance. (ex. flammability)c. Property of matter that is determined without changing

the identity of a substance. (ex. size)d. Simplest form of matter than cannot be broken downe. Particle made up of protons, neutrons & electrons.

Smallest unit of an element.

Answer:A: weight b. chemical property

c. physical property d. element e. atom

Question #11Identify each substance has an acid, base, or neutral

a. Water (pH: 7) c. cola (pH: 5)

b. Baking soda (pH = 8)

Answers:a: neutral b: base c: acid