WorksheetsAtoms 8th grade
Total questions: 28
Worksheet time: 14mins
what is an atom?
biggest unit of life
smallest unit of life
smallest unit of matter
biggest unit of matter
what is an element?
pure substance made of only one kind of atom
substance made of two or more atoms
charged particle or molecule
the smallest unit of matter
what is a compound?
an element that shares electrons
an element that transfers electrons
2 elemnts interacting
2 or more different elements Chemically Bonded
what is an Ion?
charged particle or molecule
smallest unit of life
smallest unit of matter
the interaction of elements
when is a chemical bond formed?
when electrons of different atoms interact. Force that holds atoms together
When electrons are shared. Making molecules
When electrons are transfered
When are covalent bonds formed. What do they make?
When electrons are shared. Making molecules
When different atoms interact. Making particles
When electrons are transfered. Making cells
When are ionic bonds formed?
when electrons are transfered
When electrons are shared
When electrons of different atoms interact
Which subatomic particle participates in chemical bonds?
Electrons
Neutrons
Protons
What is the location and charge of a proton?
Nucleus and positive
Nucleus and neutral
Electron cloud and negative
What is the location and charge of a neutron?
Nucleus and positive
Nucleus and neutral
Electron Cloud and Negative
What is the location and charge of a electron?
Nucleus and positive
Nucleus and neutral
Electron cloud and negative
What is adhesion?
Attraction of water to a solid surface
Attraction of water molecules to water molecules
What is cohesion
Attraction of water to a solid surface
Attraction of water molecules to water molecules
What is sensitivity
ability to respond to stimuli. The ability to sense your environment
the total of all chemical reactions occurring in an organism
the livable range for an organism's environment
What is metabolism
ability to respond to stimuli. The ability to sense your environment
the total of all chemical reactions occurring in an organism
the livable range for an organism's environment
What is homeostasis
ability to respond to stimuli. The ability to sense your environment
the total of all chemical reactions occurring in an organism
the livable range for an organism's environment
What is specific heat?
The energy needed to change temperature
The heat between contact of 2 humans
The heat between contact of an item and a human
When is energy released?
when bonds break
when a plant does photosynthesis
when a reaction between elements starts
What is capillary
Attraction of water to a solid surface
Attraction of water molecules to water molecules
upward flow of water due to adhesion and cohesion
What are 2 things you know by looking at any chemical formula?
Which elemnts
Amount of elements
Amout of atoms
Which atoms
Where is a solute found in?
lesser quantity
greater quantity
Where is a solvent found in?
lesser quantity
greater quantity
what are the properties of a compound?
the proportion of the elements is fixed
the compound is completely different
Acids
Bases
What is an acid?
substance from 0 - 7. More hydrogen ions than hydroxide ions
substabce from 7 - 14. More hydroxide ions than hydrogen ions
substance that registers 7 on the scale. Same amount of hydroxide ions and hydrogen ions
What is an alkaline/base?
substance from 0 - 7. More hydrogen ions than hydroxide ions
substabce from 7 - 14. More hydroxide ions than hydrogen ions
substance that registers 7 on the scale. Same amount of hydroxide ions and hydrogen ions
What is a neutral substance?
substance from 0 - 7. More hydrogen ions than hydroxide ions
substabce from 7 - 14. More hydroxide ions than hydrogen ions
substance that registers 7 on the scale. Same amount of hydroxide ions and hydrogen ions
What is H+
Hydrogen, the ion of acidity
Hydroxide, the ion of alkalinity
What is OH-
Hydrogen, the ion of acidity
Hydroxide, the ion of alkalinity
