The positive particle in an atom?
What is the neutral particle of an atom?
What is the negative particle in an atom?
What is the center of an atom called?
The Electrons are in the ______.
Atomic mass unit (amu) is used to measure the ______ of particles in atoms.
Protons and neutrons have a mass of ______ amu.
If protons and electrons are not ______ in an atom it is an Ion.
More electrons than protons in an atom make it ______________.
Each element is made of _____ atoms.
Do 2 positives attract or repel each other?
The number of protons equal the _________?
The sum of protons and neutrons in an atom?
the reigon of negative charge surrounding the nucleus
an ion that has more protons then electrons
no overall charges
an atom that gained or has lost an electron
a substance made up of only one type of atom
an alloy of iron and carbon
a surface that repels water
a substance that releases hydrogen iron into an aqueous solution
a substance that releases hydroxide ions
containing more than one atom
one-billionth of a metre
the basic unit in a polymer
a molecule made of repeating units formed into long chains
carbon fibres or polymer fibres embedded in a plastic matrix
a tiny cylinder of of carbon atoms are 100 nm long
a rustless alloy of steel that includes chromium and nickels
a mixture of base metal and small amounts of other metal
the number of protons in a nucleus
a pure substance that is made up of two or more different types of atoms chemically joined
a grid like structure of atoms or ions in which each particle is bounded to all of its neighbouring atoms
shatters if hit
Non-metal with a mass number of 19 (8)
Metal harder than sodium and in the same group (7)
Gas used to stop Cs and Rb from oxidising in storage (5)
Process that causes reactive metals to discolour in air (9)
Negatively-charged sub-atomic particles (9)
Part of the atom comprising protons and neutrons (7)
Protons have a ______________ charge (8)
Protons and neutrons have a relative ________ of 1 (4)
Na is the chemical symbol for ____________ (6)
The only non-metal Group 3 element (5)
H is the ______________ of hydrogen (8,6)
Clumps of metal and rock. Mainly found in the asteroid belt, located between Mars and Jupiter
Objects consisting of rock, dust and ice that travel in the universe at high speeds. When they approach the sun they vaporise and produce a trail.
An astronomical unit of distance. One ly is equal to the distance that light travels through space in a single year.
The galaxy in which our solar system is located
A body that has a sufficiently large mass and that orbits a star. Our solar system contains 8 of these, all of which orbit the sun.
A star formed from a cloud of dust and gas being pulled together by gravitational attraction. Fusion reactions occur here.
A large system of billions of galaxies
A system containing billions of stars
Planets that have a gaseous composition, often involving hydrogen and helium. These are Neptune, Jupiter, Uranus and Saturn in our solar system
Planets that have a solid composition, often composed of metals or rocks. These are Mercury, Venus, Earth and Mars in our solar system.
Atom used to build the mass of a plant
Plants get the majority of their mass from the
Sweating is an example of an animal adaption to changes in their environment, or
Photo (in photosynthesis) means
Plants absorb this out of the air to do photosynthesis
Plants absorb this in their roots
Stored energy in plants
Waste gas released from plants
The ingredients in a reaction
What is made from a reaction
Occurs in both plants and animals
Photosynthesis and cellular respiration follow the Law of Conservation of Mass (T/F)
Waste gas released from animals
Chemical form of glucose
Animals release this waste molecule of cellular respiration in the form of urine.
Plants and animals use this from the air to do cellular respiration
Useable energy for plants and animals
The process in which animals break down food to get energy
ratio betweenthe amounts in moles of any 2 compounds involved in chemical reaction
measurement of the average molecular mass of all the moecules in a sample
the study of composition,structure, and properties of matter and the changes that occour in matter
the relationship between the relative quanties of substanes taking part in a reaction
the degree of compactness of a substance
tabular arrangment of the chemical elements
a numerical or constant quantity placed beofre and multiplying variable
a metric unit of mass equal to one thousandth of a kilogram
features a flat buttom, a concial body, and cylindrical neck
measure weight or calcualte mass
a lipped cylindrical glass container for labraorty use
something we breathe
silvery white metal that is a constituent of brass
chemical element with symbol Cu
chemical symbol H
chemical symbol Pr
good eletrical and thermal conductiuty
total number of electrons is not equal to the total number of protons
smallest unit of matter
neutral group of 2 or more atoms held together by chemical bonds
atom having the same number of protons in their atomic nuclei
a chemical substance that neutralizes alkalis,dissolves some metals
ions held together in a lattice structure by ionic bonds
a way to epress numbers that are too big ot to small written in decimal form
composed of parts of different kinds
composed of parts of different kinds
substance formed by chemical union of2 or more elements
unit of measurement
a small portion of matter
contains a metal or a polyatomic ion
weight of a molecule measured in grams
weight of the simplest ratio of cations to anions
converting between moles,grams and number of particles
records volume of liquid
atoms of the same element with different number of neutrons
subatomic particle of about the same mass as a proton but without an electric charge
positive subatomic charge
subatomic particle with negative charge
integer equal to trh sum of the number of protons and neutrons of an atomic nucleus
digit that carry meaning contributing to its measurement resoltion
The name for materials that do NOT allow electricity to flow
What type of material is good at allowing electricity to flow
The name for a material that does NOT allow electricity to flow
What can control the flow of electrons in a circuit?
What is a lightbulb an example of?
A path for electrons to flow
What was our power source for circuits in class?
What nonmetal could conduct electricity (HINT: think of what you write with)
How can you describe the flow of static electricity?
Current that flows in 1 direction
Current that flows in more than 1 direction
Flow of electrical charge
The name for materials that do allow electricity to flow
the flow of electrons from one atom to another
electricity flowing in a controlled path
a part of an electric circuit which provides energy
converst electrical energy to another form
stops, starts, increases or decreases current in a circuit
provides a path for electrons
the amount of 'energy' the electrons have in a circuit
unit used to measure the number of electrons travelling through a circuit per second
different metals placed in a paste electrolyte
cells connected positive to negative
cells connected positive to positive and negative to negative
different metals placed in a liquid electrolyte
the voltage drop between two points is directly related to the electric current through a conductor
2 or more cells joined together
measured in ohms
a protection device which melts to open a circuit and prevent damage