Which of the following always happen in a chemical reaction?

The atoms in the reactants are rearranged to make the products.

Compounds react and split up into free atoms.

Elements join together to make new elements.

Atoms are broken down into smaller particles.

Quiz

periodic table quiz

Nimrta Multani 6 questions

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1Which of these is a compound?
1. Asmall particles
2. Bmade from one type of atom
3. Cmade from 2 or more elements
2Which of the following always happen in a chemical reaction?
1. ACompounds react and split up into free atoms.
2. BElements join together to make new elements.
3. CAtoms are broken down into smaller particles.
4. DThe atoms in the reactants are rearranged to make the products.
3A metal is a good conductor of heat and electricity.
1. ATrue
2. BFalse
4Non-metals have a high density.
1. ATrue
2. BFalse
5Helium is a very unreactive element.
1. ATrue
2. BFalse
6Most metals are found on the right side of the periodic table.
1. ATrue
2. BFalse