Matter and the periodic table
Physical and chemical properties are listed below malleable brittle highly combustible and has free electrons which 2 of these properties apply to most elements that conduct heat
1 and 4
An atom of the element fluorine can be represented by the Bohr model below if the atomic mass of this atom is 19 how many neutrons are in the nucleus
10
Which best describes the structure of fluorine 19
2 balance electrons in the 1st level 7 electrons in the 2nd level
The alkaline earth metal elements are in the same family in the periodic table because they all have
2 valence electrons
An enclosed 20 ml cylinder was filled with a gas sample at room temperature the sample then was transferred to an empty 40 ml enclosed container also at room temperature after being transferred the volume of the gas was
40 ml
Oxygen belong to a group 16 in the periodic table which atom most likely has properties similar to those of oxygen
A
Oxygen belongs to group 16 in the periodic table which atom most likely has properties similar to those of oxygen
A
Which of these will separate a saltwater solution
Allowing the water to evaporate
Trudy made a pitcher of lemonade she added the lemonade crystals to a pitcher of water which diagram best represents the liquid water molecules
B
Which element has properties most similar to calcium
Barium
The electron dot diagram of calcium and magnesium are shown both elements have the same number of valence electrons in what other way are these elements the same
Both elements are in the same group on the periodic table
A group of students is investigating 2 substances to determine which is table salt and which is table sugar how would the student best identify each substance
By examining the shape of the crystal
A sample in a cylinder container has a cylindrical shape and a fixed volume the state of matter of the sample
Could be either solid or liquid
Which Lewis dot diagram correctly represents the anion of sulfur S -2
D
Due to their electron structure what do these 2 atoms have in common
Family
Which of the following properties is a chemical property
Flammable
Which of these gaseous elements is the least reactive
Helium
Which best describes an atom
It has 6 electrons
Propane is a gas at room temperature which statement best describes the physical characteristics of a sample of propane at room temperature
It has an indefinite volume and takes shape of its container
Which statement best describes a liquid sample
It will retain its volume if transferred to a larger container
How does a piece of papers ability to be folded in half compare to its ability to burn
It's ability to be folded is a physical property while its ability to burn is a chemical property
The boiling point of nitrogen is -196 C what states of matter are involved when nitrogen boils
Liquid to gas
4 different liquids will be separately poured into a single beaker the liquids are ethanol milk oil and water the density for each liquid at room temperature is listed in the table below how will the liquids be arranged from bottom to top in the beaker
Milk water oil ethanol
When Ice begins to melt at 0 C water molecules
Move more freely in relation to each other
The Lewis dot diagram for an unidentified element is shown below which element could represent x
Oxygen
Which element is most likely to gain 2 electrons when it forms an ion
Oxygen
Which of these elements is the most chemically reactive
Radium
Which of the following is a chemical property of a substance
Reacts with HCI
Potassium is a very reactive metal and doesn't occur freely in nature a diagram of a potassium atom is shown below which element will have properties most similar to those of potassium
Sodium
Which information about the elements support this hypothesis
Sodium has the same balance electron structure as lithium
The drawings below represent the particles in a sample of matter that underwent a change in state based on the drawings the change in state was most likely
Solid to gas
Which is a common property if he and ne
The electrons structure supports inactivity
Which statement best describes a 50 ml sample of liquid in a 100 ml sealed container
The liquid has the same shape as its container
Which of the following is a property shared by the elements in the carbon family
The number of valence electrons
The table below shows the properties of calcium metal which statement characterizes the properties of calcium based on the table
The reactivity of calcium is a chemical property because it involves a change in the chemical composition
The alkali metal family of elements easily forms compounds with the halogens which explains why they form compounds so easily
They have 1 electron in their outer orbital which they readily use
The elements fluorine chlorine and iodine are all in the same column on the periodic table which best explains this arrangement
They have the same number of valence electrons
A sample of unknown substance has a volume that is independent of its container which additional information is needed to determine the state of the sample
Whether the sample has a fixed shape
A sample of an unknown substance takes the shape of its container which question needs to be answered to provide the additional information required to determine the state of the sample
Will it expand to the volume of a larger container
The drawing below shows 3 sealed containers labeled X Y and Z each contains a sample of matter in a different state based on the information which statement most likely represents the state of matter in each container
X contains a liquid y contains a gas and z contains a solid
