Matter Interactions Unit Test somone help me with the answerrrrrs i NEED HELPPPP
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In a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. Which statement about lithium sulfide is correct?(1 point)
Responses
The atoms in lithium sulfide are held together by bonds.
The atoms in lithium sulfide are held together by bonds.
Both lithium and sulfur form positive ions.
Both lithium and sulfur form positive ions.
The chemical formula for lithium sulfide is LiS2.
The chemical formula for lithium sulfide is LiS 2 .
A molecular model of lithium sulfide would have two spheres.
A molecular model of lithium sulfide would have two spheres.
Responses
The atoms in lithium sulfide are held together by bonds.
The atoms in lithium sulfide are held together by bonds.
Both lithium and sulfur form positive ions.
Both lithium and sulfur form positive ions.
The chemical formula for lithium sulfide is LiS2.
The chemical formula for lithium sulfide is LiS 2 .
A molecular model of lithium sulfide would have two spheres.
A molecular model of lithium sulfide would have two spheres.
The correct statement about lithium sulfide is:
The atoms in lithium sulfide are held together by bonds.
The atoms in lithium sulfide are held together by bonds.
What will make an atom without an electrical charge? (1 point)
Responses
An equal number of neutrons and electrons, because neutrons are positively charged and electrons are negatively charged.
An equal number of neutrons and electrons, because neutrons are positively charged and electrons are negatively charged.
More electrons than protons, because electrons are negatively charged and protons are positively charged, and electrons are much smaller than protons
More electrons than protons, because electrons are negatively charged and protons are positively charged, and electrons are much smaller than protons
An equal number of protons and electrons, because electrons are negatively charged and protons are positively charged.
An equal number of protons and electrons, because electrons are negatively charged and protons are positively charged.
An equal number of protons and electrons, because electrons are positively charged and protons are negatively charged.
An equal number of protons and electrons, because electrons are positively charged and protons are negatively charged.
Responses
An equal number of neutrons and electrons, because neutrons are positively charged and electrons are negatively charged.
An equal number of neutrons and electrons, because neutrons are positively charged and electrons are negatively charged.
More electrons than protons, because electrons are negatively charged and protons are positively charged, and electrons are much smaller than protons
More electrons than protons, because electrons are negatively charged and protons are positively charged, and electrons are much smaller than protons
An equal number of protons and electrons, because electrons are negatively charged and protons are positively charged.
An equal number of protons and electrons, because electrons are negatively charged and protons are positively charged.
An equal number of protons and electrons, because electrons are positively charged and protons are negatively charged.
An equal number of protons and electrons, because electrons are positively charged and protons are negatively charged.
The correct response is:
An equal number of protons and electrons, because electrons are negatively charged and protons are positively charged.
An equal number of protons and electrons, because electrons are negatively charged and protons are positively charged.
Which statement about an atom is correct?(1 point)
Responses
The neutron has no charge and is found outside of the nucleus.
The neutron has no charge and is found outside of the nucleus.
The proton has no charge and is found in the nucleus.
The proton has no charge and is found in the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The neutron has a negative charge and is found in the nucleus.
The neutron has a negative charge and is found in the nucleus.
Responses
The neutron has no charge and is found outside of the nucleus.
The neutron has no charge and is found outside of the nucleus.
The proton has no charge and is found in the nucleus.
The proton has no charge and is found in the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The neutron has a negative charge and is found in the nucleus.
The neutron has a negative charge and is found in the nucleus.
The correct statement about an atom is:
The electron has a negative charge and is found outside of the nucleus.
The electron has a negative charge and is found outside of the nucleus.
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?(1 point)
Responses
The model should show 27 protons and 32 neutrons.
The model should show 27 protons and 32 neutrons.
The model should show 32 protons and 59 neutrons.
The model should show 32 protons and 59 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 59 protons and 27 neutrons.
Responses
The model should show 27 protons and 32 neutrons.
The model should show 27 protons and 32 neutrons.
The model should show 32 protons and 59 neutrons.
The model should show 32 protons and 59 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 27 protons and 27 neutrons.
The model should show 59 protons and 27 neutrons.
The correct statement about the model of a cobalt atom is:
The model should show 27 protons and 32 neutrons.
The model should show 27 protons and 32 neutrons.
Question
If a substance is made of a single element, it is(1 point)
Responses
made of one type of atom.
made of one type of atom.
made of multiple types of atoms that have chemically bonded together.
made of multiple types of atoms that have chemically bonded together.
made through chemical reactions.
made through chemical reactions.
made of one atom.
made of one atom.
If a substance is made of a single element, it is(1 point)
Responses
made of one type of atom.
made of one type of atom.
made of multiple types of atoms that have chemically bonded together.
made of multiple types of atoms that have chemically bonded together.
made through chemical reactions.
made through chemical reactions.
made of one atom.
made of one atom.
The correct response is:
made of one type of atom.
made of one type of atom.